Polycrystalline
a. 多晶的\\n[计] 多晶的
🗣️ 情景例句
On a studect visa, full-time work is not permitted.
持学生签证的话，不允许做全职工作。
The money the miser hoards will do him no good.
守财奴积的财富，对他自己没好处。
Tomorrow is christmas Eve, and my father and I went to choose a Christmas tree today.
明天是圣诞节前夜，今天我和父亲去选圣诞树。