It is necessary to protect trees from the frost.
必须保护树木免受霜冻。
In order to protect trees, we should not cut down trees for throwaway chopsticks.
为了保护树木，我们不应该再为了制作一次性筷子而砍倒树木。
Black bear cubs use trees for defense, whereas brown bears and polar bears, which regularly inhabit treeless environments, rely on aggression to protect their cubs.
黑熊幼崽用树来防御，而经常生活在没有树的环境中的棕熊和北极熊则依靠攻击性来保护它们的幼崽。
In order to protect our environment, immediate actions should be taken, such as stopping cutting down trees.
为了保护环境，我们应立即采取措施，例如停止砍伐树木。
They plant trees in the desert area to keep the sand and protect the environment.
他们在沙漠地区种树来固沙和保护环境。
In order to protect forests, we must plant trees and stop cutting forests down.
为了保护森林，我们必须种树并且停止砍伐。
Protecting trees is to protect yourself.
保护树木就是保护自己。
The study, published in PLOS ONE, has reminded scientists to encourage communities to do more to plant and protect trees.
这项发表在《公共科学图书馆·综合》上的研究提醒科学家们鼓励社区采取更多措施种植和保护树木。
He realized that it was because there weren't enough trees to protect them from the heat.
他意识到，这是因为没有足够的树来保护它们免受炎热的影响。
But in Niger many farmers plant trees to protect their crops.
但在尼日尔，许多农民种植树木来保护庄稼。
All you need do is locate a suitable nest and run string from it to the trees you wish to protect.
你所有需要所的只是为编织蚁安一个合适的巢，并用一根绳子连接到你所要保护的那棵树。
Lines of people, Shouting their frustration, try to protect their trees and save their land.
成排成列的人们懊恼的呐喊，试着去保护他们的树木和土地。
Trees produce natural chemicals, called isoprene and terpene, that are thought to protect their leaves from too much heat and sunlight.
树木分泌的天然化学物质异戊二烯和萜烯被认为可保护树叶免受过多热量和阳光的伤害。
In the distance, I could see only the trees planted to protect the shore.
从远处望去，我只能看到用来保卫海岸的栽种的树。
Wang has mango trees, which also help to shade and protect his coffee plants.
王就种植了芒果树，这些树可以遮阳，对他的咖啡树起到保护作用。
Large swaths of planted poplar trees now protect fields once ravaged by floods, wind, sandstorms and soil erosion, giving boost to agricultural activities.
大片成行的杨树保护着曾经遭受洪水、大风、沙尘暴肆虐和土壤侵蚀的农田，从而促进农业生产活动。
Noticing how the rapid environmental degradation was affecting women's lives, she encouraged them to plant trees to ensure future supplies of firewood and to protect water sources and crops.
注意到环境恶化已经严重影响到女性的生活，她鼓励人们种植树木保证未来木材的供应和保护水土资源和农作物。
After getting the work done, we put up a board reminding people to protect the trees.
做完这工作后，我们提出了一个提醒人们保护树木的董事会。
He says farmers are acting on their own to protect and plant trees.
他说农民们在保护和植种树木上正在尽其所能。
We cannot just take from trees. We must do something to protect them.
我们不能只从树木那儿索取。我们必须有所作为，保护树木。
The protection of trees, that is, to protect themselves.
保护树木，就是保护自己。
In this, I called the people, not to ruin the trees and flowers of the natural world, don't mess killed a birds a beast, don't kill our friend, protect one of nature's creatures.
在此，我呼吁人们，不要再破坏自然界中的花草树木，不要再乱杀一禽一兽，不要再杀害我们的朋友，要保护好自然界中的一个个生灵。
To protect the olive trees, the Franciscans were obliged to build a higher enclosure.
方济会士建了很高的建物来保护这些橄榄树而受到感激。
After getting the work done, we put up a board reminding people to protect the trees.
所做的工作后，我们提出了一个板，提醒人们保护树木。
Melgina Voltine, a local farmer, says she intends to protect the few trees she has left on her land.
玛提娜芙汀，一位当地农夫说，她打算保护她土地上仅有的树。
We can do alot of is to protect the earth, for example, we can plant trees to keep the air fresh.
我们可以做很多是来掩护地球，好比说，我们可以种树来保持空气的清爽。
Besides, we should take measures to protect the forests and plant as many trees as possible.
此外，我们要保护森林植被，并尽可能的种更多的树。
Besides, we should take measures to protect the forests and plant as many trees as possible.
此外，我们要保护森林植被，并尽可能的种更多的树。
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