Pvdf
[化] 聚偏二氟乙烯
🗣️ 情景例句
And my first nephew.
我的第一个侄子。
Would 1:00 be convenient?
1点钟行吗？
He gets into the lift. It takes him down to the first floor.
他进入电梯。他乘电梯下到1楼。