97. vacant a. 空的,未占用的
(例)If that room is vacant, we can practice there. 如果那个房间空着,我们可以在那练习。
98. vacuum n. 真空,真空吸尘器
(例)His wifes death left him a vacuum in his life. 他妻子的去世使他的生活变得空虚。
99. oral a. 口头的,口述的,口的
(例)He will take an oral examination. 他将接受口试。
100. optics n. (单、复数同形)光学
(例)The optic theory originated with Einstein. 光学理论是爱因斯坦首创的。
101. organ n. 器官,风琴
(例)The heart is a vital organ. 心脏是维持生命必须的器官。
(例)He plays the organ in church. 他在教堂弹奏风琴.
102. excess n. 过分,过量,过剩
(例)He drinks to excess. 他嗜酒无度.
103. expel v. 驱逐,开除,赶出
(例)He was expelled from the school. 他被学校开除了。
104. expend v. 消费
(例)He lived high and expended largely. 他生活讲究,花费很大。
105. expenditure n. 支出,消费;经费
(例)My expenditure is conditioned by my income. 我的支出受我的收入限制。
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