Pellidon
多孔聚酰胺膜
🗣️ 情景例句
The only entry requirement is a valid passort.
入境的唯一条件就是持有一本有效的护照。
It is harder to marry a daughter well than to bring her up well.
养女容易嫁女难。
In spite of national differences, certain funny situations have a universal appeal.
尽管民族不同，有些滑稽的情节却能产生普遍的效果。