Unlike kilims, these "pile" carpets are not flat, they are deep and soft because their surfaces are covered with the ends of thousands of pieces of yarn.

VOA: special.2009.11.04

These distinctions between them are soft.

因此它们之间的区别并不严格。

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- So, for example, if he was talking about the group one metals, he noticed these were all very soft reactive metals, those were grouped together.

比如，他在讨论，I，族金属，注意到它们都是质地较软的活性金属，这些被归到一类。

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