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1. The automatic valve in the engine is responsible for controlling the flow of oil.
发动机中的自动阀门负责控制机油的流动。
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2. The automatic valve was designed to prevent overheating in the engine.
自动阀门的设计目的是防止发动机过热。
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3. The technicians replaced the faulty automatic valve with a new one.
技术人员用一个新的自动阀门替换了故障的阀门。