有时候说“不”是必要的。
此外，当你快要满足毕业要求的时候，有必要去申请毕业。
In addition, it is necessary to apply for graduation when you near the time that you will be completing your graduation requirements.
此外，在你即将完成毕业要求的时候，有必要去申请毕业。
In addition, it is necessary to apply for graduation when you're near the time that you will be completing your graduation requirements.
事实上，为了继续对话，有时候沉默是必要的。
In fact, sometimes silence is needed in order to continue a conversation.
去国外旅行时候，随身携带一些外国货币是很有必要的。
When traveling abroad, it is very necessary to bring some foreign currency with you.
如果我有必要参加考试，这个阶段是我会认真准备考试的时候。
If I have to take exams, this is the stage when I would prepare in earnest for them.
在考试前调整心情很有必要，因为面对压力的时候我们可能无法像往常一样做的好。
It is necessary to adjust our mood before exams because we may not do well as usual under stress.
有时候，正式是必要的，在这种情况下，“谢谢”仍然是最好的选择。
Sometimes, formality is necessary, and "thank you" is still the best choice in such situations.
我在必要的时候，难道不能在法官面前正确地陈述吗？
Should not I be able to set it forth correctly before the judge, if occasion required?
例如，一种新的系统允许联合收割机向牵引拖车发送呼叫，以便司机可以在必要的时候卸载谷物。
A new system allows a combine harvester, say, to send a call over to a tractor-trailer so the driver can unload the grain as and when necessary.
必要的时候，字典也会很有用。
阅读的时候，没必要每个生词都查字典。
There is no need to look up every new word in the dictionary when you are reading.
“你必须确保你不会一次翻两页并且必要的时候确保你回到前面找到音乐重复的部分。”蒂特顿先生解释说。
"You have to make sure you don't turn two pages at once and make sure you find the repeats in the music when you have to go back to the right spot. " Mr. Titterton explained.
无线电极在必要的时候还可以进行除去组织。
Wirelessly powered electrodes can also burn away tissue or cauterise as needed.
一如既往的，你应该在必要的时候分析和优化你的代码。
As always, you should profile your code and optimize it when necessary.
承认你的过犯，必要的时候请求饶恕。
对不起用了行话，但有时候还是必要的。
我只是在必要的时候才会勇敢。
还有一些人与人合伙，以在必要的时候得到帮助和保护。
Some associate with partners to ensure that they get help and protection in case of need.
1883年，当他去世的时候，很多报纸甚至觉得没有必要报道此事。
When he died in 1883, many newspapers did not find it necessary to report the fact.
有时候是不得不做必要的日常事务。
游客应该遵守秩序，在必要的时候要接受检查。
The visitors should obey the seat ordinance and accept the inspection when it's necessary.
很明显，有时候，破除约定俗成的东西是必要且有益的。
Obviously, there are times that bucking convention is necessary and beneficial.
游客应遵守秩序，在必要的时候要接受检查。
The visitors should obey the seat ordinance and accept the inspection when it’s necessary.
它的消息功能允许它在必要的时候写出出错消息。
Its message functionality lets it write out error messages when required.
它们报导中国文化，并让人们保持警醒，从而在有必要的时候可以采取行动。
They report on the culture of China and alert the people so that action can be taken if needed.
这对特定的模块是必要的，但是大多数时候都不需要。
It is necessary for the particular module, but will not be needed most of the time.
不要只有一个计划，要有一千个计划，并在必要的时候修改计划。
Instead of having one plan, have one thousand plans, and revise them as necessary.
你没必要每次和女孩子聊天的时候都想到结婚。
You don't have to think about marriage every time you talk to a girl.
你没必要每次和女孩子聊天的时候都想到结婚。
You don't have to think about marriage every time you talk to a girl.
应用推荐