Polycrystallinity
多晶性, 多晶结晶度
🗣️ 情景例句
Life has its ups and downs, but it certainly has its rewards.
人生有沉也有浮，但是无论怎样都确有其价值。
What did he ask you?
他问你什么？
Don't touch anything unless your teacher tells you to.
除非老师允许，否则你不要动任何东西。