Perlit
波利特铸铁, 珠光体铸铁
🗣️ 情景例句
Well, then why are you so sad?
那你为什么如此难过？
He was anxious about his son's safety.
他担心他儿子的安全。
Many people pretend that they understand modern art.
有很多人装成很懂现代艺术的样子，