并且再微小的颗粒污垢也会导致发动机相关内部零部件的严重磨损。
And again the tiny particles fouling will cause serious engine internal components.
当我们以电影的方式来处理场景的时候它始终是有瑕疵的，比如柔和的边界、颗粒以及一些污垢灰尘和小的瑕疵都是必须的。
And when we work with film the scene ends up with imperfections such as softened edges, grain and some dirt due to dust and micro scratches.
用含有颗粒的抛光膏进行抛光能够清除牙齿表面污垢。
Polishing with a gritty paste can remove stains on a tooth's surface.
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