Polysilicon
[计] 多晶硅
🗣️ 情景例句
I'm off today.
我今天休假。
If anyone here does one of these things, let me know.
这儿如果有人也喜欢打羽毛球或读书，请告诉我。
We were getting very worried.
我们都非常担心呢。