Idf
abbr. 综合资料文件（intergrated Data File）
🗣️ 情景例句
Don't get so excited about it.
别因为这事儿太激动。
Please answer the door.
请去开门。
and still cannot fathom the exact outline of the vision before them.
站在镜前，不能辨认出自身的真面目。