First, the weapons should be intended for use only in retaliation after a nuclear attack. Second, the possession of the weapons must be a temporary expedient.

首先，这些武器应当只在遭受核袭击后反击时才使用。其次，这些武器的拥有必须是一种临时的应急手段。

《柯林斯英汉双解大词典》

All customers travelling on TransLink services must be in possession of a valid ticket before boarding.

所有使用联运服务的乘客在登机前必须持有有效机票。

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Some people worry that discovering life elsewhere, especially if it turns out to be in possession of incredible technology, will make us feel small and insignificant.

某些人担心探索别处的生命，尤其是结果发现其拥有难以置信的技术，那将会使我们感到非常的渺小和无足轻重。

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Brown said that he does not believe that the roughly 25, 000 emails in the possession of Anonymous will be released.

FORBES: OpCartel Focuses on North Carolina District Attorney

As a result, in the event of conflict with Iraq, Saddam Hussein's forces will be better equipped, in possession of better intelligence and in more secure domestic control than would otherwise be the case.

CENTERFORSECURITYPOLICY: Center For Security Policy

I'm trying to recall and understand exactly how the box of gifts came to be in your possession.

CNN: Transcript: White House Deputy Counsel Mills' statement