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'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。
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。
San Jose's officials are resolved to give poor kids access to the resources necessary for success in life.
圣何塞的官员决心为穷苦孩子们提供必要的资源，来让他们获得成功。
In short, a good and harmonious environment at home is necessary for a child to grow healthy.
总之，良好和谐的家庭环境对孩子的健康成长至关重要。
It is necessary for us to build a good working relationship with our partners without whom we cannot accomplish anything.
与搭档建立良好的工作关系非常有必要，因为没有他们我们什么事情都完成不了。
What traffic teaches us is that reckless and uncontrolled change is as likely to harm us as it is to benefit us, and that thoughtful regulation is necessary for a better future.
交通教会我们的是，不计后果、不受控制的变化既可能造福我们，也可能伤害我们，而考虑周到的监管对更美好的未来而言非常必要。
Do you think it necessary for dispatchers to draw maps by hand when they have electronic maps?
当调度员有电子地图时，你认为有必要用手画地图吗？
You can help your children to gain the concept that soil is not just dirt but something necessary for life.
你可以帮助你的孩子认识到，土壤不仅仅是泥土，而且是生活必需的东西。
It is necessary for the companies and state agencies involved to consider the ethical consequences of these potential changes to build a better future for all.
相关公司和国家机构有必要考虑一下这些潜在变化的伦理后果，为所有人创造更美好的未来。
Earth is a rocky planet where there is liquid water, which is necessary for life to exist.
地球是一个岩石行星，这里有液态水，这是生命存在的必要条件。
Alternative input devices are necessary for Mobility-impaired individuals.
对于行动不便的群体来说，替代性的输入设备是必需的。
Some uses of color in nature remain unknown, but one thing is for sure, color not only makes our planet beautiful but it is also necessary for our planet to live on.
颜色在自然界的一些用途仍然未知，但有一件事是肯定的，颜色不仅使我们的星球变得美丽，也是我们的星球得以生存的必要条件。
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 us to do so in public.
我们在公共场合有必要这样做。
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 is necessary for developing a strong working spirit.
培养强烈的劳动精神很有必要。
Plenty of water is necessary for growing potato plants.
种植马铃薯需要大量的水。
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。
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。
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。
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'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。
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。
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