Polythiourea
聚硫脲
🗣️ 情景例句
for Michelle and me to get to know each other better.
让Michelle和我彼此更了解。
Goodbye, it was nice meeting you.
再见，很荣幸认识你。
'Do you call that a hat?' I said to my wife.
“你把那个叫帽子吗？”我对妻子说。