This is not the first time that prices for recovered materials have fallen sharply in this way; the same thing happened in the 1990s and prices recovered within two years.

回收再利用材料的价格并不是第一次这样急速下降；同样的事情在20世纪90年代也发生过，但在不到两年的时间里又回升到了原点。

youdao

Many useful substances are now recovered from materials which used to be thrown away.

现在可以从过去往往被丢掉的东西中提取许多有用物质。

youdao

As prices of raw materials uprising, margins of main synthetic fiber materials recovered except polyester and acrylonitrile.

随着原料价格上涨，除聚酯及丙烯腈外，主要合纤原料的毛利水平有所好转。

youdao

More than 400 paper mills in the U.S. use at least some recovered materials in their manufacturing processes.

FORBES: Recycling Fiber (Paper)...The Basics...

The stuff is put through a strainer to remove random debris, then sucked via tubes into a vacuum system that blends it with other polyurethane scraps recovered from car dashboards and shipping materials.

FORBES: Wipe Up