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1.ingredient n.（混合物的）组成部分
The active ingredient in some of the mouthwashes was simply detergent.
某些漱口剂中的有效成分只不过是洗涤剂而已。
2.boost vt.促进，提高
Do what you can to give her confidence and boost her morale.
尽你所能让她树立信心，提高士气。
3.conclude vt.& vi.结束，终止
The competitors cantered into the arena to conclude the closing ceremony.
选手们慢跑进入竞技场，为闭幕式画上了句号。
4.beneficial adj.有利的，有益的
An aptitude for computing is beneficial for students taking this degree.
计算才能对于攻读这个学位的学生有益处。
5.consume vt.消耗，消费；耗尽，毁灭；吃光
Classically, overweight people underestimate the volume of food that they consume.
一般来说，超重的人往往低估自己摄入食物的量。
6.prolong vt.延长，拉长
The operation could prolong his life by two or three years.
这次手术可使他多活两三年。
