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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 468. convey v. 传达 469. collapse v. 坍塌 470. affection n. 喜爱 471. yield v. 结出 472. promising a. 有希望的 473. publicity n. 公众的注意 474. hazard n. 危险 475. forge v. 伪造 ~ a famous painter s signature 476. concession n. 让步 477. submerge v. 淹没 478. imperative a. 必要的 479. elapse v. 逝去 480. confine v. 限制 | 
