This rag-picker was a grateful creature, and she smiled, with what a smile, on the three portresses.

这个拾荒者是一个懂得感恩的人，她对那三个看门的女人微笑着，笑得多么灿烂。

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"By touching the bag and feeling it, the rag-picker knows its value," says a scientist.

“只要摸一摸，拾荒者就知道这种塑料袋值多少钱”，一个科学家这样说。

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"By touching the bag and feeling it, the rag-picker knows its value," says a scientist.

“只要摸一摸，拾荒者就知道这种塑料袋值多少钱”，一个科学家这样说。

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