401. after a short while 不久之后
402. be uncertain about
不确信，对…没有把握
403. add a. to b. 将 a添加到b
404. be honored for sth. 因…而感到荣幸
405. make a contribution to sth.
对某事做出贡献
406. be set in California
以加里拂尼亚为背景
407. pick up 1.捡起，拾其 2搭车
408. be caught in a snow storm
遭遇暴风雪
409. in a great hurry 匆忙
410. bring up sb. 抚养，养育
411. Excuse me for doing sth
为...感到抱歉.
412. What a shame 太遗憾了 全网曝光张翰QQ：111180
413. be pressed with
414. in the late 1870s 19世纪70年代后期
415. keep a bank 经营银行
416. here and there 到处
417. can't help doing sth
.禁不住做某事
418. trade with 与..做交易
419. first day covers
420. sooner or later 迟早
421. add to sth. 添加
422. used stamps 用过的邮票
423.tell the difference between a.and b
辨别a与 b
424. fill a.with b. 用b 装满a
425. generally speaking 一般来说
426. struggle against
反对，抗争，挣扎
427. from area to area 不同区域
426. below freezing 零度以下
427. all the year round 全年
428. natural gas 天然气
429. a great deal of 大量的，许多
430. on average 平均
431. make use of 利用
432. keep alive 保持活力
433. offer sb. a lift room
434. clear sth. up 清除
435. the other day 前几天
436. tidy sth.up 打扫干净
437. knock sb. off 撞到某人
438. What happened to me?发生什么事
439. take it easy 别急
440. stay still 不要动
441. medical care 医疗服务
442. at the back of 在……背后
443. deal with 处理
444. pour a. into b. 把a倒入b
445. keep out of the reach of
放在够不着的地方
446. do sth. by mistake 误做某事
447. nearby hospital 附近的医院
448. large quantities of 大量的
449. be fit for sb. 适合某人
450. hear about 听说
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