Quadriliteral
a. 包含有四个字母或辅音的\\nn. 包含有四个字母或辅音的字[字根]
🗣️ 情景例句
That's a good sign.
这是个好兆头。
Work has a bitter root but sweet fruit.
劳动根虽苦，然而果实甜。
We had expected much lower prices.
我们希望报价再低一些。