Undocumented
a. 无正式文件的, 无事实证明的
🗣️ 情景例句
Could I get you a drink?
你要喝杯饮料吗？
It's wrong to break the law.
犯法是不对的。
It's a dictionary.I hope it'll help you.
是本词典。我希望它能对你有所帮助。