Ratching
作棘齿, 刻锯齿
🗣️ 情景例句
I need multimedia capability for my system.
我的计算机系统需要多媒体功能。
I invited him ti come down, but he wouldn't.
我请他下来，但是他不肯。
Supper is ready at six.
晚餐六点钟就好了。