vt.& vi.打（麦等），脱粒，反复地做，推敲
n.打谷
He and his cousins bought a steam thresher on shares.
他和他的堂兄弟们合伙买了一台蒸气脱粒机.
According to the rub threshing method, the new thresher was made.
提出了擦离脱核的方法并设计制造了一种新型脱核机.
Now electricity runs the thresher.
脱粒机现在由电驱动.
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