425. severe a. 严重的 ~ wound
426. shield v. 保护
427. simultaneously a. 同时地
428. sole a. 唯一的
429. sponsor n. 赞助者
430. startle v. 惊吓
431. stray v. 走失
432. substantial a. 可观的，大量的=considerable> a substantial income
433. sufficient a. 充分的
434. supplement v./n. 补充>He ~ed his income by taking a part-time job.
435. testify v. 作证
436. trigger v. 引发 ~ a debate/war
437. swing v. 摇摆
438. universal a. 普遍的
439. utilize v. 利用
440. variation n. 变动> the ~ in temperature
441. virtually ad. 实际上
442. wretched a. 难过的
443. flexible a. 灵活的 The dancer’s body is very ~.
444. facet n. 侧面 a ~ of American life
445. endeavor v. /n. 努力
446. elaborate a. 精心的
447. crude a. 未加工的 ~ oil
448. preach v. 说教
449. strive v. 力求 ~ for freedom
450. punctual a. 守时的>He is a ~ man.
451. harness v. 治理 ~ a river
452. integrity n. 诚实;完整
453. submit to v. 屈服=yield to
454. launch v. 发起
455. striking a. 显著的
456. instinct n. 本能
457. maintenance n. 保养
458. scrape v. 刮,擦
459. sensible a. 合情理的
460. eliminate v. 去除
461. propel v. 推动
462. pledge n. 保证
463. label n. 标签
464. justify v. 使…有正当理由
465. initiate v. 创始
466. stereotype n. 陈规，固定的看法
467. identify…with v. 使等同
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