Monofluoride
一氟化物
🗣️ 情景例句
Hello, it's good to see you again.
很高兴又见到你。
What's your nationality?Are you American?
你的国籍是什么?你是美国人吗？
The following answer is subject to official confirmation.
以下的答案必须再经过正式确认才有效。