Sfn
abbr. Sound Field Nonunifornity （声场不均匀度）
🗣️ 情景例句
Mitchell, so nice of you to come.
Mitchell，欢迎光临。
Try (your friend) before you trust him.
朋友要经考验，才能取得信任。
When he landed near Dover, the first person to greet him was a local policeman.
当他在多佛着陆后，第一个迎接他的是当地一名警察。