213. clue n. 線索，提示 

(例)The police found a clue which will help them catch the robber.警察發現了能幫助他們抓住強盜的線索。

214. collision n. 碰撞，沖突 

(例)a collision between two trains一次兩列火車相撞事件 in collision with和... 相撞［沖突］

215. device n. 裝置，設備 

(例)These newly-designed devices will appear on the exhibition next month.這些新設計的器件將在下月的展覽會上展出。
216. devise vt. 發明，策劃，想出 

(例)The Inquisition of the Medieval Ages devised many demoniac means of torture.中世紀的宗教法庭創造了許多駭人聽聞的酷刑。
217. inevitable a. 不可避免的 

(例)Such a difficult operation may not succeed, it's an inevitable gamble.這樣難度很大的手術可能不成功,但這是一次非做不可的冒險。
218. naval a. 海軍的 

(例)The naval port is silent and beautiful at night.軍港之夜寂靜而美麗。

219. navigation n. 航行 

(例)Navigation Acts航海條例
220. necessity n. 必需品；必要性 

(例)Food and clothing are necessities of life.食物和衣服都是生活的必需品。

221. previous a. 先，前，以前的  (例)He has had no previous experience of this kind of job.他從前沒有做這種工作的經驗。

222. provision n. [pl.]給養，口糧 

(例)Provisions are plentiful.糧食充足；設備，裝置；準備  (例)They make provision against possible disasters.他們采取措施防備可能發生的災難。
223. pursue vt. 追逐 ，追求，從事，進行

(例)The police are pursuing an escaped prisoner.警方正在追捕一個在逃的犯人；

(例)People can not live only to pursue pleasure.人不能只為尋樂而活著；

(例)She pursued the study of English for five years.她持續不斷地學了五年英語。

224. stale a. 不新鮮的，陳腐的 

(例)stale bread不新鮮的面包，stale news陳舊的新聞
225. substitute n. 代用品  vt. 代替

(例)Use plastics as a substitute for steel.用塑料做鋼的代用品；

(例)If you cannot go yourself, please find someone to substitute you.如果你不能親自去就找個人代你去。

（搭配）substitute for代替...，替換...， 取代...；substitute sth. [sb.] for用某物[某人]來代替

226. deserve vt. 應受，應得，值得

（例）The article deserves careful study. 這篇文章值得仔細研究.

227. discrimination n. 辨別，區別；識別力;差別，歧視  

（例）We are strongly opposed to racial discrimination.  我們強烈反對種族歧視。

（搭配）sex discrimination 性別歧視，racial discrimination  種族歧視

228. professional a. 職業的;專業的n. 專業人員

（例）That doctor has been accused of professional misconduct.   那位醫生被指控違反醫德。

（例）This survey is the work of a real professional.   這份調查是真正內行人做的.

（搭配）professional education 職業教育  a professional baseball player 職業棒球選手  professional skill 專業的技術

229. secure  a.安全的，可靠的 v. 使安全；保護……（免于危險）,保證，確實，確保

（例）The little boy felt secure near his parents.   那小男孩在父母身邊感到安心。