Unwitnessed
a. 未被觀察到的, 未被留神注意的, 無證人簽署的
??? 情景例句
All right. Please hold two orchestra seats for us.
好，請幫我們保留兩張前排的座位。
He is good at reading and writing, but he wishes he knew how to understand and speak better.
他的閱讀和寫作是強項，但他希望知道怎樣去理解和說得更好。
he had included a large number of funny stories in the speech and, of course, it was a great success.
他的祝詞里面加進了大量逗人的故事，自然大獲成功。