Fomite
污染物
🗣️ 情景例句
Sounds like what?
声音像什么
Just to be on the safe side.
为了安全起见。
What a pity! Never mind. We must get together some other time for a chat.
真可惜！不过不要紧。我们必须找个时间聚一聚、聊一聊。