426. shield v. 保護
427. simultaneously a. 同時地
428. sole a. 唯一的
429. sponsor n. 贊助者
430. startle v. 驚嚇
431. stray v. 走失
432. substantial a. 可觀的,大量的=considerable> a substantial income
433. sufficient a. 充分的
434. supplement v./n. 補充>He ~ed his income by taking a part-time job.
435. testify v. 作證
436. trigger v. 引發(fā) ~ a debate/war
437. swing v. 搖擺
438. universal a. 普遍的
439. utilize v. 利用
440. variation n. 變動> the ~ in temperature
441. virtually ad. 實際上
442. wretched a. 難過的
443. flexible a. 靈活的 The dancer’s body is very ~.
444. facet n. 側面 a ~
445. endeavor v. /n. 努力