Take away trees, and there's less transpiration.

树变少了，蒸腾作用就会减少。

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

这样它们就不会因为蒸腾作用而损失太多水分。

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

亚马逊雨林里的树通过蒸腾作用降水再循环。

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

最终，蒸发和植物蒸腾作用会将水分释放到气中，再次成为降水。

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

这种蒸发，叫作蒸腾作用，中产生一种负压，把液体的树液往树上方拉。

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腾作用的过程，有时也叫蒸散作用。

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，要依赖于三种力量：蒸腾作用，毛细作用和根压。

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

根部吸收雨水后，它们会一个叫蒸腾作用的过程中通过树叶把水蒸气释放空气中。

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、蒸发和蒸腾——这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腾作用产生的无数小云层，你几乎看不到任何东西。