Tetragonal
a. 四角形的
🗣️ 情景例句
I'm afraid the cardboard boxes are not strong enough for transport by sea.
我担心这种纸箱，用于远洋运输，不够结实。
No practice, no gain in one's wit.
吃一堑，长一智。
And you lent me some money too, which I never repaid you.
你还借给我一些钱，这笔钱我还没有还你呢。