1·The chair has a ratchet below it to adjust the height.
这把椅子下面有一个棘轮来调整高度。
—— 《柯林斯英汉双解大词典》
2·In a computer, the games are played 100 times, mimicking a ratchet with many teeth.
在计算机中，这个游戏进行100次，以模拟有许多齿的棘轮。
3·This trapping of heavier objects — moving them upward when one would expect them to fall down — is the essence of a ratchet.
这种对较重物体的捕获机制——人们觉得重物体会向下走，然而捕获机制会使它们向上——这种机制正是棘轮的本质。
4·They have been driven by a ratchet effect.Individual American politicians have great latitude to propose new laws.
它们是棘轮效应驱动下的产物。美国政客们有很大的自由提出新法律。
5·Dr Akeson, meanwhile, created a clever ratchet arrangement by attaching a polymerase enzyme to the AHL protein.
同时埃克森博士通过在AHL蛋白质上附着聚合酶，来创造了一种巧妙的棘轮排布。