5491.reflect(动)反射；深思熟虑
The calm lake reflected the trees on the shore.
平静的湖面映现出岸边的树木。

5492.reflection(名)反射；反映；内省
He admired his reflection in the mirror.
他欣赏着自己在镜中的影像。

5493.reform(动)改革，改造
People should try to reform criminals rather than punish them.
人们应试图去改造犯罪而不是去惩罚他们。

5494.refrain(动)抑制
Let's hope they will refrain from hostile action.
希望他们能克制一下，不要采取敌对行动。

5495.refresh(动)使提神、使给予活力
The long sleep had refreshed her.
一场酣睡使她重新又精力充沛。

5496.refreshment(名)提神之物、精神恢复
She looked forward to winter for the refreshment of long walks in snowy weather．
她盼着冬天到来后体验雪天远足的爽快感觉。

5497.refrigerator(名)冰箱
We have a refrigerator in our kitchen．
我们厨房里有一台球箱。

5498.refuge(名)避难所
Thery were forced to seek refuge from the fighting．
他们被迫寻求庇护，以躲避战争。

5499.refugee(名)难民
During the war, many refugees fled to Britain.
战争期间，许多难民逃往英国。

5500.refund(动)退钱、还款
The fee is refunded after three months.
这项费用三个月后会退还。

5501.refusal(名)拒绝
I tried very hard to persuade him to join our group but I met with a flat refusal.
我尽最大努力劝他参加我们团队，但遭到了断然拒绝。

5502.refuse(动)拒绝
同义词decline
He flatly refused to discuss the matter.
他断然拒绝商讨这件事。

5503.regain(动)取回
The party has regained eontrol of the region.
这一政党重新获得了这个地区的控制权。

5504.regard(动)认为；注意(名)注目
(动):Her work is very highly regarded.
她的工作受到高度评价。
(名):He was driving without regard to speed limits.
他开着车，根本不理会速度限制。

5505.regarding(介)关于……
She has said nothing regarding your request.
关于你的要求，她什么也没说。

5506.regardless(副)不顾虑地、不顾一切地
The weather was terrible but we carried on regardless.
天气非常恶劣，但我们并不理会，照常进行。

5507.regards(名)问候
惯用复数
Give him my best regards.
请代我向他致意。

5508.register(动)登记(名)记录
(动):You'd better register this parcal.
这个包裹你还是挂号邮寄的比较好。
(名):The class register contains the names of all the boys and girls.
班级注册包括班上所有男孩和女孩的姓名。

5509.registration(名)登记、记录
Her's your registration card．
这是你的登记卡。

5510.regret(动)后悔、遗憾
I regret to have to do this, but I have no choice.
对不起，我必须这么做，因为没有别的选择。

5511.regulate(动)管制，限制，控管
The activities of stock exchanges are regulated by law．
股票交易所的活动受到法律的制约。

5512.regulation(名)规定；管理
Under the new regulations, spending on office equipment will be strictly controlled.
根据新的规定，办公设备开支将受到严格控制。

5513.rehearsal(名)预演、排演
The dress rehearsal didn't go too well．
彩排进行得并不太好。

5514.rehearse(动)预演，详述、排演
we were given only two weeks to rehearse.
我们只被给予两个星期的排练。

5515.reign(动)统治(名)统治；君主统治时期
(动): In England, the sovereign reigns but does not rule.
在英国，君主统而不治。
(名):The American Revolution took place during the long reign of Gaorge．
美国独立战争发生在英国乔治三世漫长的统治时期。

5516.rein(名)缰绳；统治(动)驾驭
(名):He gave the horse a free rein.
他放松缰绳。
(动): You should rein in your children a little.
你应该对自己的孩子严加管束。

5517.reject(动)拒绝；否认
Until these issues are rasolved,a technology of behavior will continue to be rejected, and with it possibly the only way to solve our problems．
如果这些问题得不到解决，研究行为的技术手段就会继续受到排斥，解决问题的唯一方式可能也随之继续受到排斥。

5518.rejection(名)拒绝
He decided not to approach her for fear of rejection.
他因怕遭拒绝决定不再去找她。

5519.relationship(名)关系
This "disposable work force" is the most important trend in American business today,and it is fundamentally changing the relationship between people and their jobs.
这种“可遣散的”劳力是美国商业当前最重要的趋势，这一趋势在彻底改变人与工作之间的关系。

5520.release(动)释放、解放；上映
Don't release this news to the public until we give you the go-ahead.
在我们没有绐你下一步指令前，不要把消息公布于众。

5521.relevant(形)有关的
同义词relative
It's said that a person's fate is relevant to his character．
据说人的命运与性格相关。

5522.reliable(形)可靠的、可信赖的
I'm reliant on him beause he is reliable.
我之所以依靠他，是因为他很可靠。