Desmodur
聚氨基甲酸酯类粘结剂
🗣️ 情景例句
Thanks. But I have a question.
谢谢。但我想问一下
Sweep before your own door.
先律己，后律人。
But which language is the most widely spoken in the world?
但是世界上哪种语言运用最广泛？