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. on credit赊购; with credit以优异成绩; to one’s credit使某人感到光荣; do sb. credit 使…感到光荣

　　502. on schedule(=at the planned or exacted time)按时,准时;ahead of schedule提前; in advance预先;behind schedule落后于计划进度,晚于规定时间

　　503. scrape through(in) 勉强通过

　　504. from scratch(=from the beginning)从头开始

　　505. in search of 寻找;in honor of 为了...表示敬意;in memory of 为纪念..;in hopes of为期待..;in pursuit of 为追求..;in behalf of为…的利益;in favor of 为赞成…;in support of 为支持…

　　506. senior to 比…年长; junior to 比…轻;superior to 比…更好; inferior to 比…差

　　507. sensitive to 对…敏感; sensible (of)觉察到的; sensational耸人听闻的

　　508. in sequence 按顺序, 按先后次序

　　509. share sth. with 与…分享,分担,分摊,共用

　　510. be shocked at / by 对…感到震惊

　　511. fall short of 达不到

　　512. in short (=in a few words, in brief)简称

　　513. be shy of 难为情, 不好意思

　　514. take the side of 站在…一边

　　515. catch the sight of (=see for a moment)瞥见

　　516. at the sight of 一看见…

　　517. speak ill of 说…的坏话; speak well of 说…的好话

　　518. specialize in 专门研究, 专攻

　　519. on the pot(=at the place of the action)在现场, 在出事地点; 或(=at once) 立即

　　520. take a stand against 采取某种立场反对 take a stand for 采取某种立场支持…

　　523. stare at 目不转睛地看, 凝视, 盯着

　　524. in step 步伐一致; out of step 步伐不齐

　　525. in stock 有….货

　　526. be strict with 对…严格要求

　　527. be/go on strike 罢工

　　528. subject…to(=cause…to experience)使受..到 subject (adj.) to 易受到…的

　　529. submit…to 提交

　　530. substitute…for 以…代替…

　　531. suffer from 患…病; 受…苦痛

　　532. supply sb. with sth 向某人提供某物

　　533. make sure about 弄清, 弄确实

　　534. be surprised at对..惊奇; to one’s surprise使某人惊奇

　　535. be suspicious of (=not trusting)对…有疑心

　　536. by sympathetic to/towards对…同情,赞同

　　537. taste of 有…味道

　　538. in good taste大方,得体;(反意)in bad taste

　　539. tell…from (=recognize) 辨别.认出

　　540. in terms of (=with regard to; respectively) 按照, 根据, 在…方面

　　541. on second thoughts 经再三考虑之后

　　542. at one time 过去一度, 以前曾经

　　543. for the time being (=temporarily)暂时

　　544. in time(for) (=early or soon enough)及时on time (=punctually) 准时

　　545. in total (=all have been added up) 总计

　　546. be in touch with 与…有接触,有联系be out of touch with与…没有联系或接触

　　547. be true of适合于…的;be true to 忠于…

　　548. place (put, have) trust in 依赖

　　549. in truth 事实上, 实在

　　550. by turns 轮换地

　　551. in turn (=successively; in order) 依次

　　552. be typical of 是…的特点

　　553. for use 以便使用

　　554. in vain (=uselessly) 徒劳

　　555. in the vicinity 在附近; in close vicinity to 在靠近…的地方; in the vicinity of 大约

　　556. in view of (=considering) 考虑到… in the view of 按…的意思

　　557. by/in virtue of (=as a result of, by means of) 由于…; 依靠…力量

　　558. against one’s will 违心地, 违背意愿地at will 随心所欲; with a will有决心地

　　559. wish for 渴望某物;hope for 想要某物

　　560. in a word总之; in other words换言之; have a word with sb.谈一谈; have words with sb.争吵;have the last word有决定权 keep one’s word 遵守诺言