It felt as if we had reversed our roles of parent and child.
感觉就像我们父母和孩子交换了角色。
We took that idea and reversed it: Species are important if they support important species.
我们借鉴了这个想法，并进行逆向思考：如果物种支持其它重要的物种，那么这些物种就很重要。
LED will not "light" if polarity is reversed.
LED将不是“轻”如果极性逆转。
LED will not "light" if polarity is reversed.
LED将不是“轻”如果极性逆转。
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