Fleximer
[建]水泥-橡胶-乳胶混合料
🗣️ 情景例句
Hello.
好。
Why are you disappointed?
你为什么灰心？
It is almost always due to some very special circumstances that traces of land animals survive,
几乎总是由于某些特殊的条件，陆地动物的遗体才被存下来，