Trihedral
a. 有三面的
🗣️ 情景例句
I brought you a chicken sandwich and a glass of milk.
我替你带来一份 肉三明治和一杯牛奶。
It was eleven o'clock when he finally showed up.
他最后露面时，已经11点钟了。
He bothered me with a great many questions.
他对我提了一大堆问题，真烦！