1、A clamp automatically holds the film down on one side to help start the cut.(一个钳子会自动地将薄膜举持在一边以帮助切割。)
2、You think they willclamp down on people?(你担心这会伤害到别人？)
clamp down on
英 [klæmp daun ɔn] 美 [klæmp daʊn ɑn]
压制，取缔；