Polyfluoroprene
聚氟丁二烯
🗣️ 情景例句
Helped him?
帮助他？
When the fox preacheth,then beware your geese.
每逢狐狸讲道，当心鹅儿遭殃。
If we could stay as vigorous as we are at twelve,
假如我们能保持12岁时的旺盛生命力，