We should plant more trees and grasses.
我们应该种更多的树和草。
我们需要更多的树。
Planting more trees is good for the environment.
种植更多的树对环境有好处。
One of the best things we do is to plant more trees.
我们做的最好的事情之一就是种更多的树。
The justifications change. The desire for more trees remains constant.
理由在变，但对更多树木的渴望是不变的。
I think more trees should be planted on our campus because green areas are out of proportion to the whole campus.
我认为我们学校应该多种点树，因为学校的绿地面积与整个校园面积不成比例。
The National Arbor Day Foundation has challenged many cities to earn its "Tree City USA" flag by planting and protecting more trees.
国家植树节基金会向许多城市发起挑战，要求它们通过种植和保护更多的树木来赢得那面“美国树城”的旗帜。
就是多种树。
We should plant more trees around our neighbourhood.
我们应该在周边多种点树。
We had better plant more trees.
我们最好多种树。
Most of them will plant more trees. So will China.
它们中的多数将种植更多的树木。中国也将如此。
With his hard work, more and more trees have survived.
由于他的努力工作，越来越多的树存活了下来。
One is to plant more trees to absorb the emitted CO2 .
一种是种植更多的树木来吸收排放的二氧化碳。
To make our city more beautiful, we need to plant more trees.
为了使我们的城市更美丽，我们需要种植更多的树。
Besides planting more trees, China has tried to bring back grasslands.
除了种植更多树木以外，中国还试图恢复草原。
The more trees we plant in our city, the more beautiful Lanzhou will be.
我们在城市里种的树越多，兰州就会越漂亮。
Imagine if trees gave free WiFi, people would plant more trees like crazy.
想象一下，如果树木能提供免费的无线网络，人们会疯狂地种植更多的树木。
Now, lots of people all over the world have already been planting more trees.
现在，世界各地许多人已经在种植更多的树。
We can take part in some commonweal activities to plant more trees, for the trees are good to our environment.
我们可以参加一些公益活动来植更多的树，因为树对我们的环境有好处。
树越多越好。
I hope our country can save more trees and forests.
我希望我们的国家能够保护更多的树和森林。
I suggest more trees be planted to keep the air fresh.
我建议多植树以保持空气新鲜。
There are more trees in this park than in that park.
这个公园里的树比那个公园里的多。
We also promise to plant more trees and flowers to make it more beautiful.
我们也许诺种植更多的树和花使它更美丽。
What's more, we should plant more trees and flowers to purify the air.
更重要的是，我们应该种植更多的树木和花草，净化空气。
What's more, we should plant more trees and flowers to purify the air.
更重要的是，我们应该种植更多的树木和花草，净化空气。
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