It is necessary for us to control our desires in this consumer society.
在当今这个消费者主导的社会中，我们很有必要控制自己的欲望。
Do you think it is necessary for Sunny to give tips for the service?
你认为桑妮有必要为服务给小费吗？
It is necessary for the prince to know well how to use the beast and the man.
王子懂得如何使用兽和人是很必要的。
It is necessary for us to study hard.
对我们来说，努力学习是必要的。
It is necessary for you to study Chinese.
对你来说，学习汉语是很必要的。
It is necessary for you to buy a new book.
你有必要去买一本新的书。
I think it is necessary for us to keep healthy.
我认为这对于我们保持健康是必要的。
It is necessary for them to learn the language.
对他们来说，学会这门语言是极为有必要的。
It is necessary for them to speed up the project.
他们加速工程建设是很有必要的。
It is necessary for children to have regular meals.
对于孩子们来说，有规律地进餐是必要的。
So it is necessary for the third party to intervene.
因此，第三方的介入是必要的。
It is necessary for them to make a decision at once.
他们有必要立刻做出决定。
It is necessary for us to have some exercise every day.
每天做些运动对我们来说是很有必要的。
It is necessary for us to have understanding in our life.
在我们的生活中相互理解是必须的。
It is necessary for you to finish the work before Friday.
你们有必要在星期五前做完这项工作。
It is necessary for us youths to master a foreign language.
对我们年轻人来说，掌握一门外语是必要的。
We considered it is necessary for him to answer the question.
我们认为他有必要回答这个问题。
At a formal occasion, it is necessary for men to wear a tuxedo.
在一个正式的场合中，男仕们穿著无尾晚礼服是必要的。
Air is necessary for people, it is necessary for plants as well.
空气对人来说是必不可少的，对植物来说也一样。
It is necessary for people to drink 8 glasses of water every day.
对于人们来说，每天喝8杯水是必要的。
Hence, it is necessary for us to use Internet in a reasonable way.
因此，我们有必要以合理的方式使用互联网。
They are discussing whether it is necessary for them to do it soon.
他们正在讨论他们是否有必要很快去做这件事。
Don't be afraid of making mistakes, it is necessary for the children.
不要害怕犯错误，对孩子来说，犯错误是必要的。
It is necessary for our country to improve the standard of education.
我们国家很有必要提高教育的水准。
It is necessary for men to enter into a compact mutually among themselves.
人们之间有必要共同缔结一种契约。
We thought it is necessary for us to ask you to come here for an interview.
我们认为很有必要约你来此作一次面试。
We thought it is necessary for us to ask you to come here for an interview.
我们认为很有必要约你来此作一次面试。
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