Hdf
abbr. high-frequency direction finder 高频测向器
🗣️ 情景例句
If enough people show interest, I'll run the show.
假如有足够多的人们感兴趣，我就开始表演了。
Who rang the bell a while ago?
刚才谁在按门铃？
when the whole animal is sometimes preserved, as in a refrigerator.
有时整个动物像被放在冰箱里一样被保存下来，