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(1)儀器(equipment，etc used esp in scientific experiments)[U，C]：laboratory/chemical～實(shí)驗(yàn)/化學(xué)儀器;use a complicated～for an experiment 用一臺(tái)復(fù)雜儀器做實(shí)驗(yàn);a lot/piece/wealth of～許多/一件/大量?jī)x器;

(2)器械，裝置(machinery，instruments，equipment used for some particular purpose，esp in gymnastics)[U，C]：breathing/technical/heating～呼吸/工藝/加熱裝置;a piece of gymnastic～一件體操器械;an～for stretching leather/lighting the stage 制皮革的裝置/舞臺(tái)照明裝置;〖同〗equipment，machinery，machine，device;

(3)(身體)器官(group of bodily organs performing a particular function)[U，C]：the respiratory/breathing/digestive～呼吸/呼吸/消化器官;The dolphin possesses a built-in sonar～.海豚體內(nèi)有聲納器官。

(4)機(jī)構(gòu)(complex system of an organization)[U，C]：set up a political～建立政治機(jī)構(gòu);an economic～經(jīng)濟(jì)機(jī)構(gòu);the～of local government 當(dāng)?shù)卣畽C(jī)構(gòu);the ～of the welfare state福利國(guó)家的機(jī)構(gòu);〖同〗system，organization，setup;

【辨異】apparatus與machine、tool、appliance、instrument和device 意義各有不同。machine(機(jī)器)是由電力等驅(qū)動(dòng)的設(shè)備，為一特定用途設(shè)計(jì)的;appliance(器具，器械)多指家用機(jī)器;apparatus 指一套機(jī)械裝置;tool(工具)指干活用的手握工具(如：錘子、扳手等);instrument(工具，器具)指為技術(shù)工作設(shè)計(jì)的工具(如：外科手術(shù)刀)，可有活動(dòng)部分(如：顯微鏡，儀表);device(裝置)指有用的machine 或instrument，有褒義，如：a labour-saving device(一種省力裝置)。