Undocumented
a. 无正式文件的, 无事实证明的
🗣️ 情景例句
Oh, poor baby.
噢， 可怜的小宝贝。
Oh, it's a shame that you have to leave.
哦，真遗憾，你非走不可呀。
Yes, and we must stop people walking on this floor until it's firm. It may be necessary to put up a notice saying Keep off. Another thing, we' ll have to drill a hole in the wall for the electric wires.
是的，因此在地板牢固前，我们必须防止人们从地板上行走。可能还需要竖一个布告牌，写上“不得践踏”。还有，我们必须在墙上钻一个电线孔。