Triadaxis
三次对称轴
🗣️ 情景例句
Your car's very noisy. The muffler must be damaged.
你的车噪音真大，消声器一定出毛病了。
What do you do in your spare time?
空闲时间你干什么？
I'm very sorry. I borrowed a book from the library two weeks ago.
“很对不起。两周前我从图书馆借了一本书。