我跟他妻子一起坐在他们家的起居室里，望着玻璃门外的后院。后院里有阿伦的游泳池，上面还盖着过冬时铺上去的黑色塑料蓬。

I sat with his wife in their living room looking out the glass doors to the backyards and there was Allen's pool still covered with black plastic that had been stretched across it for winter.

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植被盖度由原来的42.5%增加到83.5%，将蒿属植物为建群种的群落变为沙打旺—野艾蒿—万年蓬组成的群落。

Plant cover was signifisantly changed after improved. Total cover was increased from 42.5 to 83.5%. Plant community was also changed.

youdao

我跟他妻子一起坐在他们家的起居室里，望着玻璃门外的后院。后院里有阿伦的游泳池，上面还盖着过冬时铺上去的黑色塑料蓬。

I sat with his wife in their living room, looking out the glass doors to the backyards, and there was Allen's pool, still covered with black plastic that had been stretched across it for winter.

youdao