An objective set of rules which we all agree to accept is necessary for any ordered society.
任何井然有序的社会都需要一套客观公正、为大家所接受的规则。
In the fourth paragraph, the writer thinks that water is necessary for life.
在第四段中，作者认为水是生命所必需的。
First-hand information is necessary for you to find out if you'll really like a career.
第一手信息对于你确定你是否真的喜欢一份工作是必要的。
It is hardly necessary for me to cite all the evidence of the depressing state of literacy.
对我来说，几乎没有必要列举所有关于人们读写能力的证据，这些证据令人沮丧。
It's necessary for us to have a thorough discussion with our parents about the meaning of education.
我们有必要与父母深入的讨论教育的意义。
Humus is necessary for rapid decomposition of leaves by bacteria and fungi and for recycling by surface roots.
腐殖质是树叶被细菌和真菌迅速分解和根部表面循环过程的必需品。
I don't know if that time apart was necessary for me to realize it, but I had more fun with her that week than I had in years.
我不知道那段分开的时间对我来说是否有必要让我想明白它，但那一周我与她在一起的欢乐比几年来的都多。
While such vigilant tracking of cancer is a good thing in general, researchers are increasingly questioning whether all of this testing is necessary for the elderly.
尽管总体上看，这种对癌症警惕的持续观察是一件好事，但研究人员越来越怀疑，是否所有这些检查对老年人来说都是必要的。
To be sure, he performs an impressive variety of interesting compositions, but it is not necessary for me to visit Avery Fisher Hall, or anywhere else, to hear interesting orchestral music.
当然，他演奏了多种多样令人印象深刻的有趣的作品，但我并没有必要去艾弗里·费舍尔音乐厅或其他其它地方听一场有趣的交响乐演出。
Plenty of water is necessary for growing potato plants.
种植马铃薯需要大量的水。
It's necessary for us to do so in public.
我们在公共场合有必要这样做。
How many steps are necessary for making mashed potatoes?
做土豆泥需要哪些步骤？
It is necessary for developing a strong working spirit.
培养强烈的劳动精神很有必要。
It isn't necessary for you to bring so many things.
你没有必要带这么多东西。
It's necessary for kids to learn to spend money wisely.
让孩子们学会明智地花钱，是很有必要的。
It's necessary for you to exercise your eyes every day.
有必要每天锻炼你的眼睛。
It's necessary for you to keep secrets for your friends.
为你的朋友保守秘密是有必要的。
All in all, it's necessary for teens to do more exercise.
总之，青少年多做运动是很有必要的。
Eight hours of sleep a night is necessary for all of us.
每晚八小时的睡眠对我们所有人都是必要的。
It's necessary for us to accept sad feelings as part of life.
接受难过的感觉是生活的一部分对我们来说是有必要的。
It's necessary for us to play sports an hour a day at school.
在学校每天运动一小时对我们来说很有必要。
It is necessary for you to read all instructions carefully before every experiment.
你有必要在每次实验前仔细阅读所有的说明。
It's necessary for us to know how to protect ourselves in an earthquake.
我们有必要知道如何在地震中保护自己。
It is necessary for schools to satisfy the need of all the students' development.
学校有必要满足所有学生的发展需要。
He said a foreign language was necessary for a person to have a better future.
他说为了有一个更好的未来，学习一门外语对人们来说是有必要的。
It's necessary for us to wear masks in public places during the COVID-19 period.
在新冠肺炎疫情期间，我们有必要在公共场合佩戴口罩。
If your best friend tells you his secrets, it's necessary for you to keep them for him.
如果你最好的朋友告诉了你他的秘密，你就有必要替他保密。
It is necessary for students to learn some team skills like developing relationships, communicating well with others and solving problems.
对学生来说，学习一些团队技能是必要的，比如发展人际关系、与他人良好沟通和解决问题。
Ajayi runs her own business making and selling bags, but she believes it is still necessary for her to learn to read and write.
阿贾伊经营着自己公司，制作并销售包包，但她认为，学习阅读和写字对她来说仍然是必要的。
I told my children that it was quite necessary for them to study hard and that it was their only chance to change their lives.
我告诉我的孩子，必须努力学习，这是改变生活的唯一机会。
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