Granular pearlite
[机] 球状波来铁
🧩 词语组成解析
n. 珠光体
🗣️ 情景例句
It's a problem, isn't it?
这确实是个问题，不是吗？
Know something of everything and everything of something.
既要有一般常识，又要有专业知识。
That's a problem we Chinese must pay special attention to.
这是我们中国人必须特别注意的问题。