lose sight (of)的用法和樣例：
例句
- He overlooked the other side of the question.
他忽略了問題的另一個方面。 - We must not lose sight of this fact.
我們一定不要忽略這個事實。 - None of us had ever set eyes on a generator before.
我們過去誰也沒看見過發電機。 - Never did he know the sight of a book.
他從來沒看見過一本書。 - She has been deprived of sight for some years.
她失明已有幾年了。 - His blindness is the result of an accident.
一次事故使他雙目失明。
