Zedeflon
四氟乙烯均聚物
🗣️ 情景例句
Yes, sir.
是的 ，先生。
I know the boy whose father is a college president.
我知道那个男孩的父亲是大学校长。
Vera's curious talent was brought to the notice of a scientific research institute in the town of Ulyanovsk, near where she lives,
维拉的特异功能引起了她家附近乌里扬诺夫斯克城一个科研单位的注意。