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(1)1)工作，運轉(zhuǎn)((of machines，etc)act or work)[I](fml)：The engine seems to be～ing normally.機器看起來運轉(zhuǎn)正常。The lift was not～ing properly.電梯運行不正常。The tractor～s on diesel oil.拖拉機用柴油驅(qū)動。〖同〗work，run，perform;

2)開動(機器等)，操縱(作)(make (a machine，etc) work;control)[T+n]：～a bulldozer/lift/lathe 開推土機/電梯/車床;

(2)有(生)效，起作用，發(fā)生影響(bring about a desired or appropriate effect;have a certain influence)[I，I+prep，I+to-inf]：The medicine～d quickly.這種藥很快發(fā)生效力。Two sorts of forces～d on it.兩種力量對它起作用。These factors/laws～to our success/advantage.這些因素/法律促使我們成功/對我們有利。Several causes～d to bring on the war.好幾個原因綜合在一起引起了那場戰(zhàn)爭。This remark～d to close the meeting in disorder.這句話導(dǎo)致會議在一片混亂中結(jié)束。

(3)經(jīng)營，管理，掌管(do business;control or direct (a business))[I+prep(from)，T+n]：This firm/company～s from offices in New York.這家商號/公司由設(shè)在紐約的辦事處管理。The company/man～s two factories. 該公司/這個人經(jīng)營兩家工廠。The theatre is well～d.那家戲院經(jīng)營得法。The privately-owned airway is allowed to～a new civil air line service.這家私營航空公司獲準(zhǔn)開辦一條新的民用航線。

(4)動手術(shù)((of a surgeon) cut open (sb，an animal)(in order to cure her/him/it of a disease))[I，I+prep(on)(for)]：The doctor will～(on her) tomorrow.醫(yī)生明天(給她)做手術(shù)。He was～d on for detachment of the retina.他做了視網(wǎng)膜剝離手術(shù)。The actress will have to have her eyes～d on.那個女演員的眼睛必須動手術(shù)。

(5)作戰(zhàn)，執(zhí)行任務(wù)(carry out military movements)[I，I+prep]：He mapped out the area where we were to～as guerrillas.他對我們即將進行游擊戰(zhàn)的地區(qū)進行了籌劃。A strong force was sent to～against the invaders.派出一支強大的部隊與入侵的敵人作戰(zhàn)。Police patrols～d throughout the area.警察巡邏隊在整個地區(qū)執(zhí)行任務(wù)。

→′operable adj 可動手術(shù)的;′operating-table n手術(shù)臺;′operating-theatre，AmE ′operating-room n手術(shù)室;′operative adj工作的，有效的，手術(shù)的;′operator n 操作者