这些包括重金属，致癌物资甚至放射性物资在内的残余物，沾满了婴幼儿的双手甚至被他们的呼吸道吸收。当婴幼儿在地板上爬行或者玩耍时，所受的污染尤甚。

The residue includes heavy metals, carcinogens and even radioactive materials that young children can get on their hands and ingest, especially if they're crawling or playing on the floor.

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但她可以很快的在地板上爬行。

But she can crawl very fast on the floor.

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