As I didn't preview enough so I misunderstand the soft landing to short fieldland or normal landing.
因为没有很好的预习，所以在操作程序上混淆了许多东西。
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This study indicates: urban build and traffic sight take on trend of accelerative increase, and that fieldland and rural inhabitation land sight present descending trend in the area.
Munch and Salinas looked at lifespan data from laboratory and field observations for more than 90 species from land, freshwater and marine environments.