"they used to do the threshing by hand but now there are machines to do it"
threshv.打谷;脱粒;反复地做
threshing method脱粒方法
threshing roller脱粒滚筒
threshing outfit脱谷装备
Threshing injury脱粒损伤
threshing device脱粒装置
threshould tester阀值测试仪
threshing-floorn.打谷场;脱粒场
threshing in agony极度痛苦地翻来翻去