Hfo
abbr. heavy fuel oil 重（燃）油; high-frequency oscillator 高频振荡器
🗣️ 情景例句
Is that all?
就这些吗？
I was born on November first,nineteen thirty-five.
我是一九三五年十一月一号。
The chaos was inconceivable.
房间里的紊乱状况是无法想像的。