Hfo
abbr. heavy fuel oil 重（燃）油; high-frequency oscillator 高频振荡器
🗣️ 情景例句
I'm supposed to be worried about my daughter,
我原该为我的女儿担心才是。
Don't take any notice of what he says-he's pulling your leg.
别理睬他，他在跟你开玩笑。
Can I get a drink ?
我给你拿点饮料好吗？