441. before long (=soon)不久, 过了不久以后.
442. in the long run (=in the end)从长远来说,最后; in the short term (从短期来说)
443. (be) at a loss 不知所措
444．major in 主修（某课程）
445. as a matter of fact 实际上, 事实是
446. by all means (=at all costs)不惜一切. (=certainly) 当然行;by means of用…; by no means 完全不, 决不
447. on memory of 为纪念…
448. on the mend (=in the process of recovering) 好转, 在康复中
449. mention sth. to sb. 向某人提起某事
450. at the mercy of (=in the power of) 任…摆布, 在…支配下
451. be in a mess 乱七八糟, 处境困难 make a mess of 弄乱, 打乱
452. bear(or keep)…in mind(=remember)牢记
453. bring(or call)to mind(=remember)使回想起
454. by mistake(由于粗心,健忘原因而)错误地
455. at the moment (=now) 此刻,现在 for the moment (=for the time being)暂时 just a moment 稍等片刻 at the last moment 在最后一刻
456. in the mood for 有情绪去做..,有心境做.
457. no more…than 和…一样都不…
458. for the most part 多半,大多数,一般来说
459. at (the) most 最多, 至多
460. make the most of 充分利用
461. be not much of(=not a good)不是很好的… be something of 有点…,像…
462. name after 用…的名字命名
463. native to 所产的
464. by nature 天生的, 生来
465. in mature 本质上
466. (be) in the nature of 属…性质
467. none other that 不是别人,正是…
468. above normal 高于正常(温度)
469. for nothing (=free, without payment)免费
470. nothing but 只有, 不过…而已
471. to say nothing of(=not to mention)更不用说…
472. do sth. at short notice 只给很少时间准备
473. until further notice 在另行通知前
474. take notice of (=pay attention) 注意
475. object to (=be opposed to) 反对
476. objection to (接动名词) 反对
477. on occasion(=now and then)不时地,必要时
478. by occasion of (=because of) 由于
479. occupy oneself with (in) 忙于(某事)
480. it occurs to sb. that… 某人想到…
481. once and for all =once and forever永远地 all at once (=suddenly, now) 立即,马上 once in a while (=occasionally) 偶尔 (just) for once 就这一次
482. (all) by oneself 独自(没有别人帮助)
483. operate on sb. 给某人做手术 operation n. come go into operation开始运转 putbring sth. into operation 使…投产,运转
484. be of the opinion 持有…的看法
485. in one’s opinion 按某人的看法
486. be opposed to… 反对…
487. be opposite to 与…相反的
488. (be) in order(=acceptable)合适的,恰当的 in order 井井有条,处于良好状态; out of order(=in bad condition)出毛病,发生故障
489. made to order 定做的(衣服)
490. originate infrom(=begin)起源于,由..引起
491. on the outskirts (of) 在城郊
492. owe…to 把…归于…
493. on one’s own (=along, without help)单独
494. of one’s own某人自己的
495. keep pace with 跟…齐步前进
496. go to great pains=take pains 下功夫,努力
497. part with (=give up, sell) 舍弃,卖掉
498. participate in (=take part in)参加
499. (be) particular about 讲究,挑剔(吃,穿)
500. in particular (=especially) 特别是,尤其
501. (a) passion for 对…的热爱,热情
502. be patient with 对…耐心
503. pay for 赔偿, 付款, 报偿, 处罚
504. pay…for 付…的钱
505. (be) at peace with 与…和睦相处 in peace (=peacefully)安静,平安
506. peculiar to… 特有的, 独具的
507. penalty for 对…的处罚,罚金
508. perform on the piano(=play the piano) 演奏钢琴
509. persist in 坚持,固执
510. in person 亲自, 当面
511. in place (in right or proper place) 放在应放的地方
512. in place of (=instead of) 代替
513. take(a) pleasure in 喜欢做某事
