... drain out 排出 drain and pump out 排放和泵出 Oil Drain Out 排油口 ...
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drain and pump out
排干并泵出
以上为机器翻译结果，长、整句建议使用 人工翻译 。
There are some systems that actually will take a circle and drop it just below the surface of the water and have the oil kind of flow into it, almost like a drain, recover it and pump it out.
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