Ultrapan
乌尔特拉潘(联邦德国产聚丙烯腈系纤维)
🗣️ 情景例句
Scientific discoveries are ofter applied to industrial production methods.
科学新发现常应用于工业生产的方法。
The best fish swim near the bottom.
好鱼游水底。
She knew that I was not an enemy of hers.
她知道我不是她的敌人。