185. shelf [ʃelf] n. 书架

　　Ex: I couldn’t find the book I wanted on the shelf.

　　186. clarify ['klærifai] vt. 澄清，阐明，使 ... 明晰

　　Ex: The teacher's explanation clarify the puzzling problem

　　187.synthesis ['sinθisis] n. 综合

　　Ex: The teacher asked me to write a synthesis of what I had observed and read.

　　188. revise [ri'vaiz] v. 校订，修正，校正

　　Ex: My professor asked to revise the first draft of the thesis.

　　189. poster ['pəustə] n. 海报

　　Ex: He put up a poster advertising the career fair.

　　190. flyer ['flaiə] n. 传单

　　Ex: Flyers are inexpensive to produce and are regarded as a very effective form of direct marketing

　　191. come up 出现，发生

　　Ex: Should he be watching TV now with the exams coming up next week

　　192. pick up 取 拿 领

　　Ex: When you're in town could you pick up the books I ordered?

　　Have you picked up your ID card from the office yet?

　　193. break 短暂的休息时间 课间休息

　　Ex. Would you like to take a break and get a soda?

　　194 give away vi. 赠送，送出

　　Ex. I gave away all my out-of-date science texts when I moved?

　　195. cover v. 覆盖，涉及，包含

　　Ex. We are rapidly nearing the end of this course in the history of classical music. We have covered several centuries in a very short time

　　196. accept v 录取

　　Ex: Because Susan was accepted by the state university, her brother Ben applied there too.

　　197. overhead projector 投影仪

　　Ex：I can run this overhead projector There’s really nothing to do it.

　　198.out of print (书等)已绝版的，已售完的

　　Ex：Her first novel is out of print now but you may find a second-hand copy.

　　199. note [nəut] n. 笔记

　　Ex: Mind if I borrow your economics notes for a while?

　　200. language lab 语音室

　　Ex：Shall I lock the language lab now before I go home

　　201. appointment [ə'pɔintmənt] n. 预约

　　Ex: I have an appointment to see Doctor Gram for a physical examination.