The problem with PVC is that they are not reusable and unrecyclable.

问题是，他们并不聚氯乙烯、因此不重用。

youdao

In reality, the majority of these "half-solutions" are either not pragmatically reusable, or they require a very significant degree of tailoring to be of any value.

实际上，这些“半成品的解决方案”中大部分不是实际可复用的，或者它们需要很大程度的裁减，才能具有价值。

youdao

In the case of local elements or anonymous types, reusable mappings are not an option at this time.

对于局部元素或匿名类型，目前不能使用可重用映射。

youdao

Reusable bags are not just used to tote food, and rarely are meat and vegetables separated (meat being an especially good medium for bacterial growth).

FORBES: In D.C., 'Skip The Bag, Save The River' Is Making Us All Sick

If you went to a fast food restaurant and purchased a packet of fries and a burger then the fries can be placed in a free bag as they are only part wrapped and you would not be expected to place these in a reusable bag as there could be some food safety risks.

BBC: Quiz: When do you have pay for a carrier bag in Wales?