学习资料

[意       思]n. 需要，必要性
[例]  She felt the necessity of accepting the invitation. 她感到必须接受这一邀请。
n. 必需品
[例]  Television is considered a necessity by a lot of people. 许多人认为电视是一件生活必需品。
n. 必然（性）
[例]  Night follows day as a necessity. 白天过去,夜幕降临,这是必然的。

更多意思

n.1.  必然，必要，需要
2.  必需的事物，必需品
3.  必然性，不可避免的情况

参考例句

1.	He felt a great necessity to talk about his problems.
	他觉得很有必要谈谈自己的问题。
2.	She was driven by necessity to steal food for her starving children.
	环境逼得她为挨饿的儿女偷窃食物。
3.	There's no necessity (for you) to write to your mother every single day.
	(你)不必每天都给你母亲写信。
4.	Is it a logical necessity that higher wages will lead to higher prices?
	工资一高物价就高,这是不是合乎逻辑的必然规律？
5.	Being short of money, I made a virtue of necessity and gave up smoking.
	我因缺钱,倒也乐得把烟戒了。
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