Idf
abbr. 综合资料文件（intergrated Data File）
🗣️ 情景例句
Except for the beard, he hasn't changed in fifty years.
除了有胡须， 他五十年来没有变。
I hope you get to the airport on time.
我希望你准时到机场。
Oh, dear! What's wrong?
噢，天哪！怎么啦？