他说：“想象一下，一辆垃圾车靠它收集的垃圾产生的木瓦斯来运转。”

"Imagine a garbage truck running on wood-gas that's produced by the garbage the truck collects," he says.

youdao

他说：“想象一下，一辆垃圾车靠它收集的垃圾产生的木瓦斯来运转。”

"Imagine a garbage truck running on wood-gas that's produced by the garbage the truck collects," he says.

youdao