Tetragonal
a. 四角形的
🗣️ 情景例句
English is important for those who wish to do international trade.
英语对于那些想做国际贸易的人来说太重要了。
I asked him to buy it for me, but he wouldn't.
我请他帮我买，但是他不肯。
'Hi, Elizabeth,' Nigel answered.
“你好，伊丽莎白，”奈杰尔回答说，