The need for alternative sources of energy is a militarynecessity.
寻找替代能源是一种军事需要。
2
Once it had decided on a cease-fire out of militarynecessity, it was ready to extract the maximum aid from us.
一旦它出于军事的需要决定停火时,它就准备从我们那里最大限度地榨取援助。
3
The permissive notion of “necessary” here carries an element of the prudential aspects of “militarynecessity, ” conceptually though not in a strictly legal sense.