They collect vegetable waste and compost it.
他们收集不要的蔬菜，制作堆肥。
However, there's such a large amount of vegetable waste that it cannot be ignored.
然而，如此大量的蔬菜废弃物并不能被忽视。
I once changed a car to run on waste vegetable oil.
我曾改装了一辆汽车，它可以烧废弃的植物油。
I once changed a car to run on waste vegetable oil.
我曾改装了一辆汽车，它可以烧废弃的植物油。
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