1704933460
1704933461
equipment是“设备”、“装备”的总称,为不可数名词:
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1704933463
They carried most of their equipment on their backs. 他们把大部分装备都背在背上。
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1704933465
We’re out to standardize equipment in factories. 我们将使工厂的设备标准化。
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1704933467
His firm supplied kitchen equipment. 他的公司供应厨房设备。
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若表示“一件设备”,可用a piece of表示:
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1704933471
This is a very useful piece of equipment. 这是一件非常有用的设备。
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1704933473
He carried a number of pieces of equipment with him. 他带有许多件设备。
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1704933475
instrument和apparatus都是可数名词,表示“一件仪器(装置)”:
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The factory is now able to mass-produce instruments of high quality. 这家工厂现在能大量生产高质量的仪器。
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All surgical instruments must be sterilized before use. 所有外科用具使用前都要消毒。
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This apparatus can purify a thousand gallons of water a minute. 这种装置一分钟可净化一千加仑的水。
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1704933483
The apparatus below is used for measuring quantities of heat energy. 下面这种装置是用来测量热能的。
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366 -er
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-er是用来构成名词的后缀(词尾),可以:
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1704933490
加在动词后,表示某种职业的人或某种人:
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1704933492
admirer advise announcer baby-sitter baker bather beginner believer breaker builder buyer commander commissioner controller dancer dealer defender designer developer diner discoverer driver employer entertainer fighter finder fitter follower founder grower helper killer labourer leader learner leaver lecturer loser lover maker manufacturer matchmaker miller miner onlooker overseer owner painter passer-by payer pitcher planner player plumber producer receiver reporter runner seller sender singer street-walker supporter talker teacher teller thinker trader treasurer turner user viewer wage-earner waiter waver worker writer 加在动词后,表示某种工具或物品:
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1704933494
air-conditioner aircraft carrier blotter can-opener comforter computer condenser cooker cutter damper drawer duster eraser feeler freezer harvester lighter liner magnifier pain-killer pointer recorder reminder ruler screw-driver starter telephone receiver timer tracer vacuum cleaner 加在名词等后构成名词表示某类人:
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banker carter docker footballer golfer gunner Londoner northerner outside photographer southerner teenager westerner 另外,还可加在形容词或副词后,构成比较级:
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shorter
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simpler
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commoner
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earlier
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happier
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narrower
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