echo
n.回音 vt.重复
I heard vague echoes of someone's footsteps.
我隐约听见有某人脚步的回音。
Our teacher echoed what the report stated.
我们老师把报告上写的东西重述一遍。
sweat
vi.出汗 n.汗
I sweat a lot on hot days.
大热天我会流很多汗。
A: Can you help me carry these books？
甲：你可以帮我搬这些书吗？
B: No sweat.
乙：没问题。
After jogging for 10 minutes, Jim started to break a sweat.
慢跑10分钟后，吉姆就开始冒汗了。
tub
n.澡盆，浴缸
My apartment, sadly, does not have a tub.
遗憾的是,我的公寓没有浴缸。
peel
n.水果皮 vt.剥/削（果皮）
Scientists have discovered that banana peels contain alcohol.
科学家发现香蕉皮含有酒精。
I think its rather troublesome to peel grapes.
我认为剥葡萄皮很麻烦。
gram
n.(重量单位）公克
One thousand grams equals one kilogram.
1000克等于1公斤。
kilogram
n.(重量单位)公斤
That heavy bag probably weighs about 50 kilograms.
那个沉甸甸的袋子大概有50公斤。
milligram
n.(重量单位)毫克
Do you know what the written abbreviation of "milligram" is?
你知道“毫克”的简写是什么吗？
indirect
a.间接的，迂回的
We had to take an indirect route because of the traffic jam.
由于塞车，我们必须绕道而行。
indirectly
adv.间接地，迂回地
At the meeting, Jack indirectly referred to a project he was working on.
杰克在会议上拐弯抹角地提到他在进行一项计划。
handful
n.一把
The boy grabbed a handful of berries and tucked them in his pocket.
这男孩抓了一把莓果塞进口袋。