Sags
v. 向下凹或中间下陷( sag的第三人称单数 ); 松弛或不整齐地悬着
🗣️ 情景例句
I heard the professor of that class is very good.
我听说那个班的教授很好。
Affairs that are done by due degrees are soon ended.
事情要安步就班地做，就会很快地做完。
As long ago as the fourteenth century,
早在14世纪，