Undocumented
a. 无正式文件的, 无事实证明的
🗣️ 情景例句
She's very pretty.
她很漂亮。
Compared to the previous model, our new model is less expensive and easier to use.
与旧型机比较我们的新型价格便宜且更容易操作。
Will you let us have the specifications?
规格说明书可以给我们吗。