游泳池里的水很清澈，像一面镜子。
The water in the swimming-pool is clear, like a blue mirror.
Seitz说，这样的“微气泡”实事上就是“由气体组成的镜子”，用一些设备将增压的水和压缩空气混合放入涡流的喷气机中，在船外产生这些气泡。
Such "microbubbles" are essentially "mirrors made of air," says Seitz, and they might be created off boats by using devices that mix water supercharged with compressed air into swirling jets of water.
于是，我准备了一盆满满的水，一面大镜子和一张纸。
So, I prepared a pot full of water, a large mirror and a piece of paper.
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