This property is characteristic of waxes, putty, damp clay, plasters, and some metals, but not of many materials that are generally known as plastics.
这种性质是蜡、油灰、湿泥土、灰泥和一些金属的特性，但不是一般称为塑料的许多材料的特性。
If you have ever played with Silly Putty, you can use clay.
如果你曾用过油灰，你就可以使用研磨泥。
If you have ever played with Silly Putty, you can use clay.
如果你曾用过油灰，你就可以使用研磨泥。
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