这是特别是与软质材料，如橡胶等软合成纤维。

This is especially the case with soft materials, like rubber and other soft synthetics.

youdao

那么，在硬质材料和软质材料之中，您将选择哪一种？

So, in horniness material and weak qualitative data, will you choose which kind of?

youdao

那么，在硬质材料和软质材料之中，您将选择哪一种？

So, in horniness material and weak qualitative data, will you choose which kind of?

youdao