In his play Macbeth Shakespeare has his three witches hovering over their mystical brew chanting “double, double toil and trouble; fire burn and cauldron bubble.”

在莎翁的戏剧《麦克白》中，他写到有三个巫婆围着她们的魔药，并且吟唱着：“不惮辛劳不惮烦，釜中沸沫已成澜”。

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There was a pot on the fire, and now and then you could hear it bubble and chunk.

火上有一口锅，不时可以听到锅里噗噗冒泡声。

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The durable time and fire resistant time of foam is dependent with gas fraction and bubble diameter etc.

另外，泡沫的析液时间、抗烧时间与泡沫气体百分比和泡沫平均直径等因素有关。

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With the debut of the Kindle Fire HD, the dot-com bubble survivor is working hard to build out its own ecosystem with as little reliance on others as possible.

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