So they flew through a flaw in the flue.

就这样，牠们就飞越了烟道里的一条裂纹。

youdao

Said the flea, "Let us fly！" Said the fly, "Let us flee！" So they flew through a flaw in the flue.

苍蝇说:「让我们逃跑吧！」 就这样,牠们就飞越了烟道里的一条裂纹。

youdao

The seal air fans deliver a design pressure that is above the operating pressure in the flue work.

密封风机能使空气达到设定的压力，此压力应高于烟气在烟道中的运行压力。

youdao

The facility, which is called a "gas governor" and consists of a large slab of concrete, a flue pipe and a control box, is intended to regulate gas supply in the area.

BBC: The gas governor in Oxted