Cephanone
唑酮头孢菌素钠
🗣️ 情景例句
Who is it?
谁呀
Let's call it a day.
我们今天就到这儿吧。
and so the tools of long ago have remained when even the bones of the men who made them have disappeared without trace.
因此，尽管制造这些工具的人的骨头早已荡然无存，但远古时代的石头工具却保存了下来。