This tire is going down.

这个轮胎漏气了。

Piston rings require an oil film between ring and liner and between ring and piston groove to seal against these high pressures and to prevent blowby.

为了，活塞环与连杆之间、活塞环与或活塞槽之间需要一层油膜以承受这些高压、阻止漏气。