For the cart so hard to draw is near its journey's end and drags over stony ground. 查尔斯·狄更斯.荒凉山庄.
When an insect visits a flower of this kind, it rubs off some of the viscid matter, and thus at the same time drags away some of the pollen-grains. 查尔斯·达尔文.物种起源.