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

以百思买为例，它一直承担着电子垃圾的最大份额，因为其两个最大的竞争对手亚马逊和沃尔玛没有它们自己的回收计划。