Metamaterial
n. 超材料
🗣️ 情景例句
What did you see on your vacation?
在假期中都看了些什么？
If it is left too long, it begins to give off a bad smell.
假如把它放得太久了，它就会开始发臭。
Usually, he catches the number 11 bus to work, but sometimes he goes by train.
通常他乘11路公共汽车去上班，不过他有时乘火车去。