Tetragonal system
[化] 四方晶系
🧩 词语组成解析
a. 四角形的
🗣️ 情景例句
that will bring parents and teachers together once a week
让家长们及教师每星期一次
All are not friends that speak us fair.
向我们说好话的并不都是好朋友。
Buried somewhere in deep grass there is a rusting lawn mower which I have promised to repair one day.
深草丛中的某个地方有一台正在生锈的割草机，那就是我曾答应某日要修理的割草机。