481 once and for all =once and forever永远地 all at once 立即,马上 once in a while 立即,马上 once in a while 偶尔 for once 就这一次
482. by oneself 独自
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. in order合适的,恰当的 in order 井井有条,处于良好状态; out of order出毛病,发生故障
489. made to order 定做的
490. originate infrom起源于,由..引起
491. on the outskirts 在城郊
492. owe…to 把…归于…
493. on one’s own 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 舍弃,卖掉
498. participate in 参加
499. particular about 讲究,挑剔
500. in particular 特别是,尤其
501. 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. at peace with 与…和睦相处 in peace 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 演奏钢琴
509. persist in 坚持,固执
510. in person 亲自, 当面
511. in place 放在应放的地方
512. in place of 代替
513. take pleasure in 喜欢做某事
514. be on the point of doing sth. 刚要去做
515. beside the point 不切正题,无关紧要
516. come to the point 谈主要问题
517. there is no point in doing sth.没必要做某事
518. to the point 中肯, 切题
519. point at 指着 point out 指出,指明
520. popular withamong大众所喜爱的,拥戴