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词汇 气泵
例句 A pump forces air into the chamber.气泵将空气压入室内。Boyle evacuated the chamber of the air pump.博伊尔抽空了气泵的气室。The pump is driven by an electric motor.这个气泵是由电机驱动的。Fish tanks often have a pump which oxygenates the water.鱼缸常有气泵往水里充氧。
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