Bilibilite
黑硅镧铀矿
🗣️ 情景例句
There's Mother and Grandpa ...
有妈妈和祖父呢……
I often get up in the morning.
我常常在早上起床。
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。