We have several projects all on the boil at once.

我们热火朝天地同时上马了几个项目。

《牛津词典》

The water is on the boil.

水在煮沸时蒸发。

youdao

When it is on the boil – we lessen the fire and scum.

当汤滚了之后，我们把火减小然后剽除汤里的浮渣。

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Engineers had to boil off the remaining oxygen by turning on a heater in the tank.

VOA: special.2009.07.22

Immigration is on the boil as a political issue in America and is controversial in much of the developed world.

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Once again she returns to the kitchen to make her cup of tea and realizes she never turned the stove on to boil the water in the tea kettle, so she turns the dial and adjusts the flame, grabs an apple and a stack of mail that needs attention and heads back into her office and back to me.

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Yes, we were put on the slow boil.

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