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。
And if we keep working toward that goal, someday, perhaps, a list won't be necessary.
如果我们继续朝着这个目标努力，也许有一天，清单就没有存在的必要了。
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。
If you want to master necessary reading skills, come to Room 308 on Tuesdays and Thursdays evenings.
如果你想掌握必要的阅读技巧，请在周二和周四晚上到308教室。
To gain necessary experience for my future career, I take an active part in social activities in college.
为了获得未来职业的必要经验，我在大学期间积极参加社会活动。
It is necessary to provide specific praise about actual actions performed and efforts made in the process.
对过程中的实际表现和付出的努力给予具体表扬是有必要的。
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。
Only flush the toilet when necessary: this means to not use the toilet as a garbage to avoid wasting water.
只在必要时冲厕所：这意味着不要把厕所当作垃圾桶使用以避免浪费水。
It is necessary to give others rights and chances to speak since the problem may concern them in different ways.
给别人说话的权利和机会是必要的，因为问题可能以不同的方式影响到他们。
In common with many of my classmates, I think it is necessary to update the multimedia equipment in the classroom.
和我的同学们一样，我认为有必要更新教室里的多媒体设备。
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。
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。
A good dose of willpower is often necessary to see any task through whether it's sticking to a spending plan or finishing a great novel.
无论是坚持一项支出计划还是完成一部伟大的小说，良好的意志力往往是完成任何任务都需要的。
A good dose of willpower is often necessary to see any task through, whether it's sticking to a spending plan or finishing a great novel.
无论是坚持一项支出计划，还是完成一部伟大的小说，完成任何任务都需要强大的意志力。
One researcher shares Glenn Schellenberg's view that it is necessary to conduct long-term developmental studies to understand the effects of music training.
一位研究人员赞同格伦·舍伦贝格的观点，认为有必要进行长期的发展研究，以了解音乐训练的效果。
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。
A friendly nod or a wave of acknowledgement in response to an act of courtesy helps to create an atmosphere of goodwill and tolerance so necessary in modern traffic conditions.
对礼貌行为的友好点头或挥手感谢有助于创造带有善意的宽容氛围，这在现代交通条件下是非常必要的。
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。
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。
Adults tend to talk about learning as if it were medicine: unpleasant, but necessary and good for you.
成年人谈论学习时，往往把它当作一剂良药：令人不快，却不可或缺，且对你有益。
She had resumed the travel necessary to add depth and colour to her novels.
她重新开始旅行以给她的小说增加深度和趣味。
I can show you how to do it if necessary.
如果有必要，我可以告诉你怎么做。
It's very necessary to use public chopsticks more.
多使用公筷是很有必要的。
Have you done the necessary work to get good marks?
您是否已做好必要的准备以取得好成绩呢？
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。
We all think it quite necessary to stop school bullying.
我们都认为制止校园霸凌很有必要。
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 not necessary to find a friend who is the same as you.
没有必要找一个和你一样的朋友。
It adds the necessary sweetness to make everyone's life better.
它增添了必要的甜蜜，使每个人的生活变得更好。
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