（例）At that time people believed the earth was the center of the universe.

当时人们相信地球是宇宙的中心。

414. via prep. 经由，经过，通过

（例）He flew to New York via Hong Kong. 他经过香港飞往纽约。

415. vibrate v. 振动，摇摆

（例）The ground vibrated during the earthquake. 地震时地面震动

416. virus n. 病毒
417. voluntary a. 自愿的

（例）She was a voluntary helper. 她是自愿帮忙的

418. volunteer n. 志愿者  v. 自愿（做）

（例）The volunteers for community service are doing a good job. 社区服务的志愿者做得很出色。

（例）They volunteered to repair the house for the old lady. 他们主动提出替老太太修缮房子。

419. vote v. 选举 n. 选票

（例）The matter will be decided by vote. 此事将投票表决。

（例）They voted her their headmistress. 他们选她做校长

420. wagon n. 四轮马车，铁路货车
421. appoint vt. 任命，委派

（例）They appointed him (to be) manager. 他们任命他为经理

422. approach v. 靠近，接近  n. 途径，方式

（例）He cautiously approached the house. 他小心地走近那房子

（例）I like her approach to the problem. 我喜欢她解决这个问题的方法。

423. appropriate a. 适当的

（例）She picked up a dress appropriate for the occasion. 她挑了一件适合该场合穿的衣服。

424. bunch n. 群，伙；束，串

（例）Miss White received a bunch of flowers from her admirer. 怀特小姐收到爱慕者所送的一束花

425. bundle n. 捆，包，束  vt. 收集，归拢

（例）Dad found a bundle of spelling mistakes in my composition. 爸爸在我作文里找出一大堆拼写错误。

 （例）He bundled the back numbers. 他把旧杂志扎成一捆。

426. ceremony n. 典礼，仪式

（例）The wedding ceremony was held on April fifteenth. 婚礼在四月十五日举行。

427. chaos n. 混乱，紊乱
（例）There was chaos in the town after the hurricane had struck.  飓风过后,城里一片混乱。

428. discount n. （价格）折扣

(例) we give 20 percent discount for cash. 现金付款,我们8折优惠。

429. display n./vt. 陈列，展览 vt.

(例) the bestsellers were sold out before they were displayed. 这些畅销书尚未    

陈列就卖光了.

(例)His paintings are on display at the exhibition. 他的绘画正在展览会上展出。

430. equivalent a. 相等的 n. 相等物

(例) A dime is equivalent to ten pennies. 一角等于十分。

431. erect a. 竖直的 v. 建造，竖立

(例) They erected their tent at the foot of the mountain. 他们在山脚下支起了帐篷。

432. fax n./vt. 传真 vt. (例) Please fax me your report before Sunday. 请在周日前把你的报告传真给我。

433. fertile a. 肥沃的；多产的

(例) The plains are extremely fertile. 这片平原极其肥沃.

434. fertilizer n. 肥料