They are planting trees these days.
他们这些天在种树。
他们在在栽树。
他们正在植树。
They are planting trees on the mountain.
他们在山上植树。
They are planting trees on the hill these days.
这几天他们正在山上种树。
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。
他们在植树吗？
They are planting some young trees now.
他们正在栽一些小树。
Sure, there is benefit to planting genetically modified trees, but are these trees really as great as they first sound?
当然，种植基因改良树木是有好处的，但是真的有利到可以作为首选作物吗？
Well, they are planting millions of trees.
哦，人们在大量植树。
They are busy planting trees on the hill.
他们正忙着在山上植树。
人们在那天植树。
人们在那天植树。
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