因此，解决该拖拉机噪声问题须首先降低排气噪声、发动机散热风扇噪声和发动机机罩振动噪声。

Therefore, in order to solve the problem of the tractor noise, the exhaust noise, the engine ventilator noise and the noise of vibrating cover of the engine should be reduced first.

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大leonopteryx成功挫败了直升机，它猛地撞向飞机，飞机发出一阵骨头要散架似的巨响，其发动机通风罩被撞下一块，参孙冒着烟跌向地面。

The great leonopteryx outmaneuvers the Samson, slam ming into it with a bone-jarring crash. It flaps away with a piece of the engine cowl, and the Samson plunges, smoking, toward the ground.

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机械和电气零件，发动机架，以及其他汽车机罩下零件。

Mechanical and electrical parts, engine mounts and other under-the-hood automotive parts.

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