Gears, for example, require lubrication, generate 300X slow shut-off check valvesnoise and suffer from inherent friction that reduces their mechanical inefficiency.
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require lubrication
需要润滑
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Since reform tends to require lubrication, opening up the public services at a time of austerity was always likely to be tough.
ECONOMIST: British politics
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