on the off chance

基本解释

Gaddafi probably built it to stay on the off chance he might visit the nearby oil fields, I thought.
我想，卡扎菲也许把这里当作偶尔视察附近油田需要小憩时的行宫。
inezha.com
Example She decided not to come out for lunch with us, on the off chance that her manager would call her into a meeting.
例如她决定不和我们出来吃午饭，有微乎其微的可能，她的经理会给她电话参加会议。
She walked up to Rose Cottage on the off chance of finding Mrs.
她走向玫瑰别墅，心想或许米克太太在家。

This was it. What could be an impossible effort in the history of spaceflight was ready to lift off on its final chance for success.

On the off chance you were going to get them the same thing for Hanukkah or Christmas, just get them something else instead.
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