Best Buy, for instance, has been bearing the lion's share of e-waste volume since two of its largest competitors, Amazon and Wal-mart, do not have their own recycling programs.

2019年6月六级真题（第二套）阅读 Section B

Electronics giants like Best Buy and Samsung have provided e-waste take-back programs over the past few years, which aim to refurbish (翻新) old electronic components and parts into new products.

2019年6月六级真题（第二套）阅读 Section B

Enormous opportunities also lie with e-waste.

2019年6月六级真题（第二套）阅读 Section B

It is estimated that in 2014 the world produced some 42 million metric tons of e-waste discarded electrical and electronic equipment and its parts with North America and Europe accounting for 8 and 12 million metric tons respectively.

2019年6月六级真题（第二套）阅读 Section B

The materials from e-waste include iron, copper gold, silver, and aluminum—materials that could be reused, resold, salvaged, or recycled.

2019年6月六级真题（第二套）阅读 Section B