Some biologists argue that ocean and air currents are responsible for the transport of plant seeds to Hawaii.

一些生物学家称，海洋洋流和空气气流是植物种子传播到夏威夷的原因。

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Birds use warm air currents to help their flight.

鸟利用暖气流助飞。

《牛津词典》

Falling rain cools the air as it descends. This creates downward air currents.

降雨冷却了空气，这就向下产生了气流。

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The balloons contain helium and oxygen so that they float around with the air currents.

VOA: special.2010.09.05

It comes after a Leeds University study has added to a growing body of evidence about the ability of bacteria to float on air currents.

BBC: Fears over risk of air transmission of superbugs

Yeang's designs use walls of plants, scallop-shaped sunshades, solar panels, advanced ventilation and the structure and of the building itself to collect water and catch cooling air currents.

CNN: Green walls: the growing success of 'vegitecture'

Neoclassical buildings that bob up and down on air currents.

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