Ultrapan
乌尔特拉潘(联邦德国产聚丙烯腈系纤维)
🗣️ 情景例句
Yes?
什么？
Today English is the international language of business and trade.
如今英语是商务和贸易的国际性语言。
They had to edge their way along this, sometimes wading across shallow streams, or swimming across deep pools.
他们不得不侧着身子往前走，有时过浅溪，有时游过深潭。