shears用單數還是復數

　　shears用復數

　　n.大剪刀，剪床

　　v.切斷;剪切

　　And so be took his shears and walked quietly away .

　　他拿起剪刀，默默地走了。

　　Using cranes armed with metal shears capable of slicing five-centimeter-thick steel , the companies would carve the wreck into liftable chunks 200 to 300 metric tons in weight . Afterward , they would use electromagnets three meters in diameter to clean the seafloor of debris .

　　他們考慮用配備金屬剪的起重機，剪子能切割5厘米厚的鋼板，把船切成每塊重量在200噸到300噸之間可以浮起來的大小，然后再用直徑3米的電磁鐵清理海底的碎片。