Sfn
abbr. Sound Field Nonunifornity （声场不均匀度）
🗣️ 情景例句
I suggest that we go climb White Cloud Mountain tomorrow.
我建议明天一起去爬白云山。
We hope to hear from you soon and can assure you that your order will be dealt with promptly.
希望尽快收到贵方答复，我们保证及时处理对方定单。
This is a standard size.
这是标准尺寸。