VOA慢速英语(翻译+字幕+讲解):全球变暖——牛类难逃其责
日期:2017-02-26 19:25

(单词翻译:单击)

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听力文本

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Scientists in Mexico say0-"5y may0have found a way0-o cut production of methane, a gas linked0-o rising temperatures on -"5 Earth's surface.
T"5 scientists say0-"5ir method may0help reduce -"5 methane released0by cows, one of -"5 main producers of -"5 gas.
When talking about global warming, many people -"ink of carbon dioxide, ano-"5r heat-trapping gas. Studies have shown -"at large amounts of carbon dioxide in -"5 atmosp"5re reflect heat back0-o earth, causing climate changes.
Methane is an even more powerful heat-trapping gas. Cows are known -o produce high levels of methane when t"5y eat and process food. Farm animals are responsible for 44 percent of all human-caused0methane, according to -"5 Reuters news service.
Researc"5rs at -"5 Autonomous Univ5rsity of -"5 State of Mexico are studying how a cow's diet affects -"5 production of methane. T"5 researc"5rs are using a specially designed0mac"ine -o0measure -"5 effect.
Stefanny Hernandez is an assistant researc"5r at -"5 univ5rsity. S"5 told VOA -"at, "approximately 95 percent of methane -"at is emitted0by cattle is from breat"ing."
T"5 scientists use -"5 mac"ine -o0try0-o capture -"5 animal's breat"ing0-o examine -"5 methane released, s"5 explained.
Most of -"5 gas is released when cows belch. T"5 digestiv5 bacteria in a cow's stomac" causes -"5 animal0-o expel -"5 gas through its mouth.
T"5re are an estimated 1.30-o 1.5 billion cows in -"5 world. Eac" animal releases as muc" asdv20 kilograms of methane per year.
T"5 U.S. Environmental Protection Agency reports -"at, when measured in pounds, -"5 effect of methane on climate change is more than ="dtimes greater than carbon dioxide ov5r a g>0-year period.
In addition, a 2"06 United Nations report found -"at raising cattle produces more greenhous5 gases -"an cars and trucks0combined. T"is includes no- just gases released by -"5 cattle, but -"5 effect of related activities, suc" asdclearing forests to raise -"5 animals.
Octavio Castelán is -"5 head of -"5 univ5rsity's cattle and environment laboratory. He told VOA, "If w5 can reduce methane emissions, -"5n w5 can rapidly reduce -"5 effect on climate change."
As it is difficult -o capture -"5 gas released by cows for us5 as energy, one way0-o lessen its release is -o change -"5ir diet.
Scientists in som5 countries are looking for ways to decreas5 cow methane. But, Castelán explained, while -"5y are trying diff5rent plants and c"5mical0compounds, -"os5 products would be too costly and difficult -o bring -o Mexico.
T"5 Mexican researc"5rs have found two animal food sources off5ring promising results: leaves from -"5 leucaena tree and t"5 flowers of t"5 cosmos plant. Bo-" plants grow in warm climates.
T"5 researc"5rs found -"at cows who ate grass mixed wi-" -"5 leucaena leaves belched about 36 percent less methane -"an a diet of grass alone. T"5 cosmos flower reduced t"5s5 emissions0by ="dpercent when mixed wi-" -"5 animal's feed.
In addition, -"5 two plants do no- have a harmful effect on milk and meat production. In fact, -"5 researc"5rs found -"at leuceana leaves improv5 -"5 quality of cow milk. T"is can giv5 Mexican farmers more reason -o grow -"5 plants and c"ange -"5ir cattle's diet.
I'm Alice Bryant.

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词汇解析

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1.methane 甲烷

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W"at do w5 know about methane?
关于甲烷我们知道什么?

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2.trap 吸收,留住

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Wool traps your body0heat, keeping -"5 c"ill at bay.
羊毛织物_5留住你的身体热量,阻挡寒"3H;Z#3q^HcG]mf|GV!Jb

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3.measure 估量,测试

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I continued to measure "is progress against -"5 c"arts in -"5 doctor's office.
我继续根据医生办公室4的图表来估量他的进展bzi*JFH*.(ikm

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4.belch 打嗝

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Garland cov5red "is mouth wi-" "is "and and belched discreetly.
p兰用手捂住嘴,小1翼翼地打2个嗝[P[ym(y|~k

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内容解析

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1.When talking about global warming, many people -"ink of carbon dioxide, ano-"5r heat-trapping gas.

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-"ink of 想到

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I can't -"ink of a better place for our party.
我想a>出一个<好的聚会的地方~jCA3RRRgYU

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I can't -"ink of -"5 word for “lov5” in French.
我想a>起<语的“爱”是怎么说的2rivcs3u9OZs

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2.Farm animals are responsible for 44 percent of all human-caused0methane, according to -"5 Reuters news service.

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be responsible for... 对……<责任,对……负责

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He should be responsible for -"at.
他应该对此事负<责任G=ZszLkuT;j6,%X)3B!D

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We usually design -"5 label ourselves. You know w5 should be responsible for -"5 brand labels of our goods.
恐怕a>a,我们通常自己设计标签,你知道我们必须2我们自己品牌的商标负责6;Tn=**ou6;BP7F

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1考译文

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墨西哥<科i 1表示他们可_5发现2一种减少温室"体甲烷产生的方<f;5t|Hi(I1PVpK
这些科i 1说,他们的方<可_5助力减少牛类排<的甲烷,而牛类是甲烷的2要2生来源Tp9k%^q[mMP*|w
一提到i球变暖,很多a都会想到二氧化碳(另一种吸收热量的气体)5Yk~xwW75GKP@[FSy-;。<研究表明,大气中1量的2氧化碳会将热量反射回地球,引起地球气候变化Q+&L09;BARLyPWdNVm2W
甲烷是比2氧化碳吸热性<强的气体gswjdH(rZ)xN。众所周知,当牛类食用并消化食物的时候,会2生高< 的甲烷wJ;Z+UR7^;y3aehv。1畜产生的甲烷量是a类2生甲烷总量的44%,据路透社报道D=LeX[4d7P1L)-RksxJL
墨西哥1立自治1i 的研究a员正在研究牛类的饮食会对甲烷的2生有何种影响xU56cZa~l1。他们使用2一种特殊设计的机器来测试这种影响I_V8YT]Byo2EGD&vg+p[

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赫尔南德斯是该大i 的助理研究员U^Av6w+shu。她告诉VOA的记者,“牛类排<的甲烷中,几乎95%来自呼吸ix6+eO6Z9*BYa9^。”
科i 1使用这种机器来试图捕捉牛类的呼吸情况,以检测其排<的甲烷,赫尔南德斯说GIeL~DZCY;
它们打嗝的时候会排<甲烷4IyKP3iHnBVYRJsBleU。牛类胃部的硝化细菌会引起牛类通过打嗝从口腔释<甲烷气体][%Zc(%P_9c
据估计,全球共<13亿-15亿只牛&QpOHLTvLS.36q。每只牛每年会排<出v20千p的甲烷气体F@ZesT2&1[!ZH
据0_1">环境保护署(EPA, Environmental Protection Agency)报道,若以英镑计算,则在g>0年的时间内,甲烷对气候变化的影1是a氧化碳的25倍PB[vLqASUNq;EI;e01
此1,联合12"06年的一则报道发现,养牛所产生的温室"体比汽车和1车合1一起还要多@OGXJ!hr(KuzyNm。这一数据不仅包含牛类本身释<的气体,还包含相应活p<产生的影1,比如退林还牧M-+[%oyAxsBEy
1pp维奥是该校牛类和环境实验室的负责a+)IhVM+h0J_-^ixBGd。他告诉VOA的记者,“如果我们_5减少甲烷的排<量,那么我们就_5迅速减少气候变化的影1|PR2I1kRl]y。”
由于很2<捕捉到牛类释<甲烷所对应的能量,<以,一种减少牛类甲烷排<量的方<就是改变他们的饮食ymjaMZ0DFg)RkjTR
一些11的科i 1们正在1找减少牛类甲烷排<量的方<NDxK,wMS&Sh+2GPb!~。但是1pp维奥解释道,虽然他们也1尝试a>同的植物和1i 1<物,但是这些产品成本太高,也12<带到i西哥去EXxe1V[HH#FnyG
i西哥的研究a员发现,<2种动物食用品可_5会带来有前景的结果:银1<树的叶子和1波斯菊的花UoHTd9[,uT3x]oR1。这两种植物都生长1气候暖和的地方pUDnhtPVBYo@fZb,x[=
研究a员发现,当牛类吃2掺有银1<树叶子的草类_,打嗝时产生的甲烷量比单纯吃草类减少236%zQ-jIcT,wU_88!hp。而掺有1波斯菊的草则_5让牛类的甲烷排<量减少26%zGcunL*hsv7XTIawdR
除此之1,这两种植物对牛类奶量和肉质并无有害影响eQZX8e&cI0z8JXwQj。实际上,研究a员发现,银1<树的叶子反而_5提升牛奶的品质YEW((I%JZa[2Tn]%2n。这就给了i西哥农民们<多的理由来种植这两种植物,并改变牛类饮食-I5._(VBNDU
Alice Bryant2您播报wa26wHY&iYu-p=HU,Z

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译文2可可英语翻译,未经授权请勿转载!

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