Their uniforms are torn and sooty.
他们的制服破烂并沾满了烟灰。
His sooty hand smudged the paper.
他被煤烟熏污的手把纸弄脏了。
The belt may make a squealing noise and throw off sooty black particles of rubber.
传送带会发出刺耳的噪音并释放出乌黑的橡胶颗粒。
The belt may make a squealing noise and throw off sooty black particles of rubber.
传送带会发出刺耳的噪音并释放出乌黑的橡胶颗粒。
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