At the upper timberline the trees begin to become twisted and deformed.

上行带界线，和雪线一样，在热带最高，在极地最低。从极地地区的海平面到干燥的亚热带地区的海拔4 500以及潮湿的热带地区海拔3 500至4 500有上行带界线。带界线内通常是常绿，它们和于上行带界线极端恶劣环境中生长的落叶相比，具有一定的优势。然而，在部分地区也有由落叶阔叶林组成的带界线。例如，在喜马拉雅的部分地区，在带界线上。

On the other end of the spectrum are plants that don't shed their leaves — for example, the pines, spruces, cedars and firs that make up the conifers, or evergreens.

不会落叶的植物包括松、云杉、雪松和冷杉等针叶或常绿。

It is called an ever-green tree; for as long as one old brown leaf drops off, a fresh green one grows in its place.

冬青是一种" 常绿" ，因为只要冬青上的一片叶子变成了棕色，落了下来，在原来的地方，会长出一片新的绿叶！

And they roost there in these giant evergreen trees until it's time for spring.

它们会在这些巨大的常绿上栖息，直到春天来临。

The boughs of the evergreens slump beneath heavy drifts.

常绿的枝条在厚厚的积雪下低垂。

This continent is dominated by a single family, Eucalyptus, which is evergreen, regardless of the substantial climatic variations found there, and leads to forests unlike any other in character.

这片大陆主要盛产桉科，无论那里的气候变化如何，桉始终是常绿，并且形成了与其他森林不同的特征。

So they are evergreen trees, they're green the year round, and they have these cones instead of a typical fruit and seed.

所以它们是常绿， 全年是绿色的，而且它们有球果而不是典型的果实和种子。

It also has lots of evergreen trees so, not surprisingly, it is " The Evergreen State."

它还有许多常绿，因此不出所料， 它的别称是“常绿州” 。

There, looming above these swaying evergreens, lies a jagged cordillera of snow-capped mountain peaks.

在那里， 高耸于摇曳的常绿之上，横亘着一片参差不齐的雪山山脉， 峰顶白雪皑皑。