Undocumented
a. 无正式文件的, 无事实证明的
🗣️ 情景例句
And what about Michelle?
那Michelle怎么办？
I wish you would give me a more detailed description of your trip.
我希望你将给我更详细地描述你的旅行。
Come on, Wu! shouted the Class 1 students. Oh! Bad luck!
“快！快呀！吴鹏！”1班的学生喊道，“啊！真倒霉！”