Take away trees, and there's less transpiration.

树木变少了，蒸就会减少。

This is so that they don't lose too much water through transpiration.

这样它们就不会因为蒸而损失太多水分。

The trees in the Amazon rain forest recycle precipitation through a process called transpiration.

亚马逊雨林里的树木通过蒸来进行降水再循环。

Eventually, evaporation and plant transpiration release water back into the atmosphere where it becomes precipitation again.

最终，蒸发和植物蒸会将水分释放到大气中，再次成为降水。

To understand this, first, you need to know about a process called transpiration, sometimes called the evapotranspiration.

要理解这一点，首先，你需要了解一个叫做蒸的过程，有时也叫蒸散。

This evaporation, called transpiration, creates negative pressure in the xylem, pulling watery xylem sap up the tree.

这种蒸发，叫蒸，在木质中产生一种负压，把液体的木质树液往树上方拉。

The earth's hydrologic cycle of constant evaporation and transpiration provides a continual supply of water from rainfall and snowmelt.

地球不断蒸发和蒸的水文循环，为降雨和融雪提供了源源不断的水源。

To accomplish this herculean task, the xylem relies on three forces: transpiration, capillary action, and root pressure.

要完成这样艰巨的任务，木质要依赖于三种力量：蒸，毛细和根压。

After absorbing rain through their roots, they release water vapor into the air through their leaves in a process called transpiration.

在根部吸收雨水后，它们会在一个叫蒸的过程中通过树叶把水蒸气释放进空气中。

Transpiration is just sweating, so let's just say sweat.

蒸就是出汗, 所以就说出汗吧。

However, this student spelled equipment wrong, concerns wrong, there's a problem with the spelling of procedure, injury, sunlight, transpiration and weight.

但是，这个同学把equipment拼错了，concerns错了，procedure、injury、sunlight、transpiration和weight的拼写有问题。

Infiltration, evaporation and transpiration -- this has been shown to be effective and efficient in meeting federal water regulations, and is surprisingly cost-effective, too.

渗透、蒸发和蒸——这在满足联邦水法规方面已被证明是有效和高效的，而且成本效益也令人惊讶。

Look, here's a picture of part of the Amazon rainforest, you'll notice you can barely see anything through the layer of numerous small clouds created by transpiration.

看，这是一张亚马逊雨林一角的照片，你会注意到透过由蒸产生的无数小云层，你几乎看不到任何东西。