It's also a good idea to wash your engine with warm soapy water every couple of weeks to dislodge the excess dust and grime that builds up on your engine block.

每隔两周用温肥皂水清洗引擎也是个好主意，这样可以去除堵塞气缸的过量粉尘和污垢。

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Yet the sound of the engine made everything seem warm and safe. Then, out of the fog he saw a mountain.

然而，发动机的声音表明，一切都是那么温馨和安全。

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This is because a proper warm-up can assist the oil to form an oil film between the engine parts and components, and then reduce the wear of engine parts.

这是因为，合理的预热能够协助机油在发动机部件与部件之间构成“油膜”，然后削减发动机部件磨损。

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