| [/ˏɔpəˈreɪʃn; ˏɑpəˋreʃən/] n 用法:
1 [U] way in which sth works; working 运转; 操作; 工作:
I can use a word processor but I don't understand its operation. 我能使用文字处理机, 但不了解其运转机制. 用法:
2 [C] activity, often involving several people and/or spread over a period of time 行动:
mount a rescue operation 发起营救行动 *
at each stage of the massive police operation 在警方大规模行动的每一阶段上 *
The entire operation will take about five days. 整个行动约需时五日. 用法:
3 (also op) [C] ~ (on sb) (for sth); ~ (to do sth) (medical 医) action performed by a surgeon on any part of the body, to treat or remove by cutting a diseased or an injured part 手术:
undergo an operation for appendicitis 接受阑尾切除手术 *
perform an operation to amputate his leg 把他的一条腿截除 *
a liver transplant operation 肝脏移植手术. 用法:
4 [C] business company 公司:
a huge multinational electronics operation 一家大规模的跨国电子公司. 用法:
5 (a) [C usu pl 通常作复数] (also ops) movement of ships, troops, aircraft, etc in war or during training （作战或训练中的）军事行动, 作战行动:
the officer in charge of operations 军事行动指挥官.
(b) Operation [sing] (used as part of a code name for military campaigns 用作军事行动代号的一部分):
Operation Overlord 领主行动.
(C) [C usu pl 通常作复数] planned campaign in industry, business, etc （工商业等的）有计画的业务活动:
involved in building, banking, business operations 经营建筑业、 银行业、 商业 *
operations research, ie study of business operations to improve efficiency in industry运筹学. 用法:
6 [C] (mathematics 数) addition, multiplication, subtraction, division, etc 运算. 用法:
7 (idm 习语) be in operation; bring sth/come into operation (cause sth to) be/become effective （使某事物）生效, 起作用:
When does the plan come into operation? 这项计画什麽时候实施? *
Is this rule in operation yet? 这条规则生效了吗? |