It is necessary to do further study and development on the pine cone.
有必要对松果进行进一步的研究和开发。
Some think it necessary to do so.
有些人认为有必要这么做。
It is not necessary to do this work.
这是没有必要做这项工作。
I don't think it is necessary to do so.
我认为没有必要这样做。
It is necessary to do outside activities.
从事课外活动是很有必要的。
I think it is necessary to do so as well.
我也认为这样做很有必要。
Mother decreed that thing necessary to do.
妈妈认为那件事有必要去做。
Some people think it is necessary to do so.
有些人认为这样做是必要的。
It's necessary to do some cleaning every day.
每天做扫除很必要。
Yeah... It's necessary to do some calculation.
是的…有些考量还是必要的。
It is not necessary to do all these exercises.
没有必要做所有的这些练习。
Therefore, it is necessary to do this research.
因此，确有研究的必要。
So, it is very necessary to do deep research on it.
所以，对空隙率波的深入研究是非常必要的。
First, it is necessary to do some exercise every day.
首先，每天都必须要做一些运动。
Daniel: Hello, is it necessary to do warm-up exercise?
听看学丹尼尔：你好，必须做热身运动吗？
Daniel: Hello, is it necessary to do warm-up exercise?
丹尼尔：你好，必须做热身运动吗？
In other cities, they don't think it is necessary to do that.
在其他城市，人们认为没有必要这样做。
It's not necessary to do that, but it can be quite convenient.
虽然没有必要这样做，但是这样做是很方便的。
Become an expert in the skills and tools necessary to do your job.
精通你工作时必需的技术和工具。
I had a lot of homework to do and I had something necessary to do.
我有很多的家庭作业要做和一些很重要的事情要做。
If your baby's fever is this high it is not necessary to do infusion.
如果您的宝宝的发热，这是高是没有必要做输液。
It points out that it's necessary to do more research about phosphorus.
且认为有必要对磷进行更深入地研究。
When you apply for a job, you learn the skills necessary to do that job.
你申请工作的时候，你会学习这份工作必须的技能。
Then the court would have decided whether it was necessary to do the test.
然后法庭决定是否有必要进行测试。
Do you think it's necessary to do export market research before exporting?
你认为出口以前进行市场调查有必要吗？
Do you think it's necessary to do export market research before exporting?
你认为出口以前进行市场调查有必要吗？
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