Broadleaves are much easier to eat and digest.

阔叶树的树叶更容易食用和消。

Broader-leaf plants that could tolerate seasonal weather changes covered the land.

能够忍受季节性的气的阔叶植物覆盖了大地。

It's spring in the great broad leaved forests of Eastern Europe and Asiatic Russia.

这是跨越东欧-亚洲-俄罗斯的 世界上最大的落叶阔叶林的春天。

The ultimate winners are the tortoises, the slow and steady hardwoods.

最后的胜利者是这些长得又稳又慢的阔叶树。

The common broadleaf trees we have on campus fall into this category, but our pines don't.

我们校园里常见的阔叶树属于这一类，但我们的松树不属于这一类。

To get started, let me describe a couple of the broadleaf trees we have in front of us.

首先，让我描述一下我们面前的几棵阔叶树。

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

上行树带界线，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米处以及潮湿的热带地区海拔3 500米至4 500米处都有上行树带界线。树带界线内通常是常绿树，它们和处于上行树带界线处极端恶劣环境中生长的落叶树木相比，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树带界线。例如，在雅的部分地区，桦树就在树带界线上。

Each level of the forest forms its own little world, home to different kinds of living things.

在人类己知的390，000种植物物种中，在亚孙可以找到40，000多种。这棵高大、古老的巴西坚果树 结出的坚果我们可以食用；这些睡莲（叶片）大到可以躺在上面。雨林的不同层次养活的野生动物种类多 到难以置信。最底层是地下的根系。往上是阴暗森林地表厚实的落叶层。再往上一层由低矮的阔叶植物组 成。然后是高耸、古老的阔叶树，最后是那些离地数米之高的大树的树冠。雨林的每一层都自成一个小世 界，成为各种生物的家园。

The traditional four seasons of Western and East Asian culture have their origin in the behaviour of the broadleaf temperate forests that dominate these areas.

西方和东亚文的传统四季起源于这些地区占主导地位的阔叶温带森林的行为。

Modern Pu'er tea refers to the product made by seasoning the sun-dried Yunnan broad leaf Qingmao tea, which belongs to the post-fermented dark tea category.

现代普洱茶是指将晒干的云南阔叶青毛茶调味制成的产品，属于后发酵黑茶类。

The third type is mostly coniferous forest found in regions where temperatures are mild, like in the classic broadleaf, but where summer droughts occur.

- 第三类是针叶林， 主要分布在气温温和的地区，如典型的阔叶林， 但夏季会出现干旱。

Native broadleaf like oak and this beech tree, and it's plenty wet enough on the Isle of Mull that they're not likely to burn.

像橡树和这种山毛榉树这样的本地阔叶树，在尔岛上足够湿润，它们不太可能燃烧。

Deciduous trees like birch and aspen live for about 100 years, so the team couldn't simply wait for one or two centuries to find out what happens in the forest.

像桦树和白杨这样的阔叶树的寿命约为100年，所以研究小组不能只是等上一两个世纪来发现森林里发生了什么。

In the south the forests are broadleaf evergreen subtropical, and blend into tropical monsoon forest, while in the north, there is a mix of deciduous and coniferous.

在南部，森林是阔叶常绿的亚热带森林，并与热带季雨林融为一体，而在北部，则有落叶和针叶树的混合。

The added carbon accumulation, as the forest regime regenerates and shifts from coniferous to deciduous trees-that's like putting the parking brake on while driving the bus, says Johnstone.

约翰斯通表示，随着森林环境更新，针叶树转到阔叶树，增加的碳积累就像在驾驶公共汽车时踩刹车一样。

Fortunately they prefer the succulent broad-leaved triticum and other woodland grasses to the silky species of the meadows, and therefore seldom bite them or set foot on them.

幸运的是，它们更欢多汁的阔叶小麦和其他林地草类， 而不是草地上的丝质植物， 因此很少咬它们或踏上它们。

The second type is the mixed broadleaf and coniferous forest found on the northern fringes of the broadleaf type just described, and acts as a border between the temperate forest and the boreal taiga.

- 第二种类型是阔叶混交林和针叶林，位于刚才描述的阔叶类型的北部边缘，是温带森林和北方针叶林的边界。