When traveling abroad, it is very necessary to bring some foreign currency with you.
去国外旅行时候，随身携带一些外国货币是很有必要的。
So it is very necessary to validate the safety.
因此，有必要对其使用的安全性加以验证。
It is very necessary to learn a foreign language.
学习一门外语是很有必要的。
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。
So it is very necessary to study mid-air collision.
因此，对空中飞行碰撞风险问题进行研究是非常必要的。
So it is very necessary to study on the unemployment .
因此，研究失业问题是非常必要的。
So it is very necessary to research on pedestrian system.
在这种情况下，进行步行系统的研究，很有必要。
Thus, it is very necessary to enhance the infrared image.
因此进行红外图像增强是非常必要的。
Therefore, it is very necessary to study toilet sign design.
可见，对卫生间标识设计的研究非常有必要。
It is very necessary to study the jamming methods to PD radar.
研究和探讨对PD雷达的干扰方法是非常必要的。
It is very necessary to build urban public safety systems in China.
由于我国城市公共安全形势严峻，构建我国城市公共安全体系十分必要。
It is very necessary to research the agricultural product logistics.
因此，研究农产品物流十分必要。
So it is very necessary to do some research work on car recognition.
因此，本文对车辆识别展开了深入的研究。
Thus, it is very necessary to study the legal system of private education.
因此，对民办教育法制的研究很有必要。
It is very necessary to have a knowledge of English in international trade.
在国际贸易中，具有一定的英语知识是十分必要的。
It is very necessary to carry out bilingual teaching in specialized courses.
在专业课教学中实行双语教学非常必要。
So it is very necessary to research the restricted multivariate regression model.
因此研究带约束的回归模型是十分必要的。
However, the art of court debate is very necessary to the success in court debate.
然而，要获得法庭论辩的成功，就要掌握法庭论辩的艺术。
Therefore, it is very necessary to developing the logging interpretation software.
因此开发一套测井解释软件就非常必要了。
Therefore, it is very necessary to trace the history of social policy of asylum seekers.
跟随对寻求庇护者所做的社会政策的历史轨迹是非常有必要的。
Therefore, it is very necessary to do the building project archives management job well.
因此，做好建筑工程档案管理工作非常必要。
It is very necessary to focus a deeper study on Strategy Environmental Impact Assessment.
进一步研究战略环境影响评价是完全必要的。
Therefore, it is very necessary to research on vulnerability of community co-management in forest.
因此，研究森林资源社区共管的脆弱性这一课题具有重要的理论和现实指导意义。
Therefore, it is very necessary to evaluate reliability and economic worth of distribution power system.
因此对配电系统进行可靠性和经济效益评估是十分必要的。
Therefore, it is very necessary to investigate the relation between organization culture and organization efficiency.
因此，探讨组织文化与组织效率的关系是很有必要的。
To study English well is very necessary in the modern society.
在当今的社会，学好英语是非常必要的。
To study English well is very necessary in the modern society.
在当今的社会，学好英语是非常必要的。
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