Last week our teacher asked us to fill in a questionnaire.
上周，老师让我们填写一份调查问卷。
At last, the slag (残渣) from burning masks can be recycled to make bricks (砖块) or fill the roads.
最后，燃烧的口罩残渣可以回收用以制作砖块或填充道路。
The reserves could last for centuries, so there will be enough lithium to fill up our tanks even in the improbable case of all cars becoming hybrid or electric.
储量可以持续数百年，因此即使在所有的汽车都成为混合动力或电动的这种不可能发生的情况下，也有足够的锂来满足我们的需求。
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