Planting trees in the desert area can keep the sand and protect the environment.
在沙漠地区种树可以保留沙子和保护环境。
We took part in planting trees.
我们参加了植树活动。
Did you take part in planting trees?
你参加植树了吗？
The children are planting trees.
孩子们正在植树。
We are planting trees this month.
这个月我们在植树。
We have gotten ready for planting trees.
他们已经为植树做好了准备。
They are planting trees on the mountain.
他们在山上植树。
Planting trees is a way to prevent flood.
植树是预防洪水的一种方法。
They are busy planting trees on the hill.
他们正忙着在山上植树。
They have been planting trees this month.
这个月来他们一直在植树。
In March, the children are planting trees.
在三月，孩子们正在植树。
Spend time planting trees in the community.
花时间在社区植树。
In March, the children are planting trees.
它是三月。孩子们正在植树。
We were planting trees this time yesterday.
我们昨天这个时候在植树。
In China, Planting Trees Day is on March 12.
在中国，植树节在03月12日。
The young men are planting trees one by one.
青年们正把树一棵棵种上。
Many cities are planting trees to cool down.
许多城市正在栽种树木以降低温度。
In China, Planting Trees Day is on March 12.
在中国，植树节是在三月十二日。
It's in March. The children are planting trees.
在三月，孩子们正在植树。
They were planting trees at this time yesterday.
昨天这个时候他们在栽树。
Did you take part in the planting trees last Sunday?
上星期日你参加栽树了吗？
I dreamt that I was busy planting trees all night long.
我梦见自己整晚都在忙着种树。
I hear there is a special day in China for planting trees.
我听说中国有一个特殊的植树的日子。
Planting trees and grass can not only resist but also fix sand.
植树种草既能阻沙，又能固沙。
They are planting trees. They are helping to make our city beautiful.
他们在植树。他们在帮助美化我们的城市。
Planting trees is the basic thing to provide a green and healthy environment.
植树是提供绿色、健康环境的最基本要素。
Planting trees is the basic thing to provide a green and healthy environment.
植树是提供绿色、健康环境的最基本要素。
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