481. once and for all =once and forever永远地
: ?3 x- i% J3 c: b7 e5 M5 D' Q: B1 y all at once (=suddenly, now) 立即,马上6 {% J& W: h; s+ r
once in a while (=occasionally) 偶尔
, x D: B/ O. e8 {$ H8 ` (just) for once 就这一次8 Q. }' S+ [$ r! u) ?; }
482. (all) by oneself 独自(没有别人帮助)% G4 H0 b5 ?! y6 j! k$ |) X! X
483. operate on sb. 给某人做手术1 J7 w8 r j0 |) y, S
operation n. come/ go into operation开始运转
8 t7 S& l5 h: a( J1 K. L put/bring sth. into operation 使…投产,运转
! y; N) X- r9 T" X+ C+ b 484. be of the opinion 持有…的看法) t& ?8 [% [. F( H- m* c
485. in one’s opinion 按某人的看法$ E) s, {0 D" X f1 u6 t
486. be opposed to… 反对…% Z' }( v& L9 M, ~% @% ^
487. be opposite to 与…相反的
" j) e" w7 ]7 o6 E+ d [ 488. (be) in order(=acceptable)合适的,恰当的
9 [( M3 B* b4 A O. ~% A$ k& ?4 ] 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! w- w9 z$ [% g, p1 i# l' h
489. made to order 定做的(衣服)
7 D( j5 ^0 Y6 e* T/ j5 E 490. originate in/from(=begin)起源于,由..引起$ Z" l; |: y5 X: [7 W
491. on the outskirts (of) 在城郊' K: N5 k9 Y5 g& K4 n( n; _" F
492. owe…to 把…归于…; i: M: j) O, i+ X
493. on one’s own (=along, without help)单独
9 w4 w2 U" L- k, M- K% A$ k) c3 ^& L0 a 494. of one’s own某人自己的2 v2 w4 { f# e, }% q; Q
495. keep pace with 跟…齐步前进: w- X- o: |8 U$ z& O
496. go to great pains=take pains 下功夫,努力3 F E& x( {7 h7 ^
497. part with (=give up, sell) 舍弃,卖掉
, R: p3 q0 Y W+ u 498. participate in (=take part in)参加' A: w; h8 F( X$ \8 Y
499. (be) particular about 讲究,挑剔(吃,穿)
, n) |: N- @, k" z 500. in particular (=especially) 特别是,尤其 |