水槽中不可有上升的气泡。

There must be no air bubbles rising in the water bath.

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较大的气泡迅速上升到水面并消失，而被称为微气泡的较小的气泡可以持续数天。

Larger ones rise quickly to the surface and disappear, whilst smaller ones called micro-bubbles can last for days.

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被冰川锁住的空气气泡可以证明温室气体排放水平的上升，这已被作为“人类时代”开始的证据。

The rise in the level of greenhouse gases, which can be demonstrated on the basis of air bubbles trapped in glaciers, has been proposed as evidence of the beginning of the "age of man."

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