rachet

['rætʃit]

n. (防止倒转的)棘齿
vt. 使 ... 一点一点移动或改变
vi. 一步一步进行

例句与用法：

It's a little complicated ... this is Rachel Edward of computer ...

说来有一点复杂 ... 我是Computer的RachelEdwards。

Rachel who died last week was still above ground.

雷切尔上星期去世，现在还没安葬。