I don't know when and where I had ever seen something falling down out of a broken bag.
我不记得什么时候，也不记得在那里，我曾见过有东西从破了的包里掉出来。
Ever since the Miocene time, aeolian dust has been falling down over Northwestern China, forming the Loess Plateau.
中国西北地区，从中新世以来就有持续不断的风尘沉积。
Ever since the Miocene time, aeolian dust has been falling down over Northwestern China, forming the Loess Plateau.
中国西北地区，从中新世以来就有持续不断的风尘沉积。
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