ratchet effect

• 棘轮

ratchet effect的用法和样例：

例句

1. A ratchet allows a heavy weight to be raised in short successive stages.
   棘轮可在简短连续的步骤内就把一个重物抬高。
2. Switching between the two games seemed to create a ratchet-like effect.
   在两个游戏中切换似乎产生了类似棘轮的效应。