Vfss
[计]= Voice Frequency Signalling System,音频信号系统
🗣️ 情景例句
They are above average 85. I'm among the upper third of my class.
我的平均成绩在85分以上。我是全班第三名。
About how long does it take?
大约要坐多久？
So far, not one of them has been struck down by sudden death!
然而到目前为止，还没有一个人暴死呢！