The baby spiders felt the warm updraft.

蜘蛛娃娃们感觉到温暖上升气流。

From there, they use natural updrafts, also called mountain waves, to soar to the sky.

之后，飞机将利用上升气流飞翔，人们把他叫作“地形波”。

We're leaving here on the warm updraft.

“们在乘着这温暖上升气流离开这里。

Battling violent updrafts and acid clouds, these non-stick pioneers were swept nearly halfway round the planet.

对抗着上升气流和酸云, 这些不为人知先驱者已经几乎环绕这颗行星一周。

The more condensation and the bigger the storm clouds grow, the more powerful those updrafts become.

凝结程度越大，并且形成风暴云团越大时，那些上升气流就越强。

Did you make a solar updraft tower of your own?

您自己制作太阳能上升气流塔吗？

We were caught in a strong updraft.

们陷入强烈上升气流中。

As that happens, an updraft is created when the warm air rises.

当这种情况发生时， 当暖空气上升时会产生上升气流。

Spiraling updrafts lifted the sails, and the spiders were on their way.

螺旋上升气流扬，蜘蛛们正在赶来路上。

We're going to build something called a solar updraft tower.

们要建造一个叫做太阳能上升气流塔东西。

What you're looking at is the peeled back artificial turf that was sucked up by the powerful updraft of this tornado.

你现在看到是被龙卷风强大上升气流吸走剥落人造草皮。

Tornadoes are thought to die off when thunderstorm updrafts lose energy.

当雷暴上升气流失去能量时， 龙卷风被认为会消失。

So, can you guess what our solar updraft tower will do?

那么，你能猜出们太阳能上升气流塔会做什么吗？

There are some places in the world where they actually use giant solar updraft towers to generate electricity!

世界上有些地方实际上使用巨大太阳能上升气流塔来发电！

The conditions experienced by the hailstone can change as it passes horizontally across or near an updraft.

当冰雹水平穿过或靠近上升气流时， 冰雹所经历条件会发生变化。

Once released from the surface, dust particles are raised to higher levels of the troposphere by turbulent mixing and convective updrafts.

一旦从地表释放出来， 尘埃颗粒就会通过湍流混合和对流上升气流上升到对流层更高水平。

Hail is a form of precipitation consisting of solid ice that forms inside thunderstorm updrafts.

冰雹是一种降水形式， 由在雷暴上升气流中形成固体冰组成。

The baby spiders felt the warm updraft. One spider climbed to the top of the fence. Then it did something that came as a great surprise to Wilbur.

小蜘蛛们感受到这温暖上升气流。一只蜘蛛爬到栅栏上面，然后他做件令威伯非常惊奇事。

Like the thermal updrafts that hawks and vultures ride on, finding even the smallest patches of turbulence in the air to carry them.

就像鹰和秃鹰乘着热上升气流一样，找到空气中哪怕是最小湍流来携带它们。

Around ground zero, a fierce updraft sweeps  hot, vaporized debris into the atmosphere, forming a mushroom-shaped cloud taller than any  structure on Earth.

在零地周围，猛烈上升气流将炽热汽化碎片扫入大气中，形成比地球上任何结构都高蘑菇状云。