他们之间激烈地争来斗去，当他试图去收成熟的麦穗时，它们的茎扫在他的手腕上。
They had fought him savagely, their stems slashing across his wrists as he tried to harvest a ripe ear.
当拖动本清扫车时，清扫轮鼓上的清扫刷反方向转动，将垃圾扫入垃圾斗。
A towed sweeper for the street in city is disclosed. The sweeping brushes on the sweeping drum are reversely rotating to sweep the garbage into garbage bucket.
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