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genetic
a.遗传(学)的 n. (-s)遗传学
More and more doctors believe that cancer is a genetic disease.
越来越多医生认为癌症是遗传病。
hierarchy
n.等级制度；统治集团，领导层
The Supreme Court is the head of a hierarchy of federal courts.
最高法院是联邦法院等级系统中的最高机构。
imitation
n.模仿；仿制，仿制品；赝品
An artist who can only give imitation of others' styles will not achieve acclaim.
一个只会模仿他人风格的艺术家 是不会获得人们称赞的。
impair
vt.损害，损伤，削弱
Over 200,000 babies are born in the U. S. each year with deformed bodies and impaired minds because of defective genes.
由于基因有缺陷，每年美国有超过20万新生婴儿身体畸形、智力受损。
impetus
n.推动，促进，刺激；推动力
The reform and opening-up policy is the primary impetus behind China's economic recovery.
改革开放政策是促进中国经济恢复的主要推动力。
layman
n.门外汉，外行
Doctors sometimes confuse laymen with their jargon.
医生有时用专门术语把外行人弄得稀里糊涂。
maneuver
n.策略，花招；(pl. )演习 vt. 使设法变动位置，(敏捷或巧妙地)操纵 vi. 用策略，耍花招
I maneuvered myself out of an embarrassing position.
我略施小计，摆脱了困境。
manuscript
n.手稿，原稿，底稿；手写本
Now in China, most writers, especially the young ones, can use computers to write their manuscripts.
现在中国大多数的作家，尤其是年轻作家都能用电脑来写稿。
necessitate
vt.使成为必要，需要
The increase in population necessitates a greater food supply.
人口的增加需要更多的食物供应。
offset
vt.补偿，抵消
He has to offset his small salary by living economically.
他以节俭的生活来抵消其微薄的收入。
perfection
n.完美，完善
The engineers in Honda Automobile Factory are working toward the perfection of a new design.
本田汽车厂的工程师们正在努力改进一项新的设计使之完美。
periodic
a.周期的，定期的，时而发生的
There is such an orchestra in the Caucasus. All of the members are more than 100 years old. They rehearse regularly and give periodic concerts.
高加索确实有这样一个乐团。乐团的所有成员都在百岁以上，他们定期排练并定期开音乐会。
permissible
a.可允许的，许可的
The prison governor said what the prisoner requested was unfortunately not permissible.
监狱长说囚犯的请求不大可能得到批准。
recycle
vt.回收利用(废物等)
In Los Angeles alone, millions of pounds of paper are discarded or burned daily rather than saved for recycling.
仅仅在洛杉矶，每天都有数百万磅的纸张被丢弃或烧掉，而不是留着再次利用。
serial
n.连续剧，连载故事 a. 连续的，顺序排列的
Jing Yong's Kongfu novels often appear as serial novels in newspapers.
金庸的武侠小说经常以连载小说的形式出现在报纸上。
staple
n.订书钉，U形钉；主食；主要产品vt. 用订书钉订a. 主要的；经常需要(或使用)的
Staple the invoice and the receipt together.
把发货清单和发票订在一起。
