扯上扯下pull: vt. 1.拉,拖,牵,曳 (opp. push); 勒 ...up: adv. (superl. uppermost ) 1. ...down: down3 n. 1.(装被、褥等用的)鸭绒 ...up-and-down pull on the drawbar: 上下推动牵引钩down pull: 下拉力下载手机词典可随时随地查词查翻译