Tetragonal
a. 四角形的
🗣️ 情景例句
Hi, Tom, this is Mary.
嗨，汤姆，我是玛丽。
The air conditioner is out of order.
这空调坏了。
He was rather elderly with grey hair and clear blue eyes.
他上了年纪，有着灰白的头发和明亮的蓝眼睛。