Perlit
波利特铸铁, 珠光体铸铁
🗣️ 情景例句
I'd like you to meet my friend Malcolm Stewart.
我来为你介绍我的朋友Malcolm Stewart。
What's the population of China?
中国有多少人口？
Could you direct me to the station, please?
请问到车站怎么走？