润滑 的中文句子和英文句子

由于是固定的支承点，死顶尖必须润滑。

The dead center, being a stationary bearing point, must be lubricated.


如果你老是怕麻烦，不给发动机添加润滑油，发动机当然会失灵卡住啦。

If you never bother to lubricate your engine, of course it will seize up.