Water is a basic necessity of life.
水是一种基本生活必需品。
There is agreement on the necessity of reforms.
关于改革的必要性有一致意见。
There had never been any necessity for her to go out to work.
她从来就没有出去工作的必要。
As soon as the necessity for action is over the troops must be withdrawn.
一旦军事行动的必要性不复存在，部队必须撤离。
Travel has become a necessity.
旅行已经成为一种必需品。
Necessity is the mother of invention.
需要乃发明之母。
This necessity comes with the rise of big science.
这种必要性是伴随着大科学的崛起而产生的。
The fund-raising ability is largely a product of experience and necessity.
筹集资金的能力在很大程度上是经验和必要性的产物。
We recognize the necessity for a written agreement.
我们认为有必要签订一份书面协议。
This is, of necessity , a brief and incomplete account.
这必然是一份简略的、不完全的描述。
Mostly they climb as a necessity to make money.
他们大多把登山当作赚钱的必经之路。
Necessity will force the swift adoption of more efficient ones.
需求将迫使我们迅速采取更有效的措施。
Some people held that owning an automobile nowadays is a necessity rather than a luxury.
有些人认为如今拥有一辆汽车是必需而不是奢侈。
I realize this is a necessity.
我认识到这已经是必需。
ASEM has yet to prove its necessity.
亚欧会议的必要性还有待证实。
茶并不是生活必需品。
遗嘱也是必需的。
But it was also born of necessity.
但其实这也是理所应当的。
Yet the main prompt has been necessity.
然而主要的推进政策是必要的。
但它是必要的吗？
Necessity really is the mother of invention.
需要才是发明之母。
Monogamy is a possibility - and a necessity.
一夫一妻制不仅是可能的，而且是必要的。
We argue that this change is a necessity.
我们认为这种变化是必需的。
Wires are an ugly necessity of the modern world.
导线是现代世界一个丑陋的必需品。
For these women, change has become a necessity.
对于这些女人来讲，改变是必须的。
Iceland let its banks fail out of necessity, not choice.
冰岛处于必要才让其银行破产，这并不是选择性的。
Modal logic is the logic of necessity and possibility.
模态逻辑是关于必要性和可能性的逻辑。
Modal logic is the logic of necessity and possibility.
模态逻辑是关于必要性和可能性的逻辑。
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