查询词典 necessary

Of course, as the reform progresses, some of these policies should be improved or amended as necessary .

当然，随着实践的发展，该完善的完善，该修补的修补

The ametropia incidence rate in Lanzhou area is similar to that in other domestic areas. It is necessary to take certain interventions to protect the visual power of high middle school students.

兰州市中学生屈光不正发病率与国内其它地区类似，采取一定的干预措施保护中学生的视力是有必要的。

He can be hard when it's necessary, but also very amicable and correct with everyone.

有必要的时候他会很严厉，但对每个人的态度都很亲切并恰如其分。

De Morainvilliers, a French emigrant, a native of Amiens and pastor of St. Patrick's church, Baltimore, used his influence with his parishioners to procure for the newly-arrived community the aid necessary for their establishment.

德波萨达Morainvilliers ，法国移民，土生土长的亚眠和牧师的圣帕特里克教堂，巴尔的摩，利用他的影响力与他教民采购的新来港社区援助必要的场所。

To exploit this simple coupling technology fully, it is necessary to control the level of amine modification.

利用这个简单的耦合技术全面，它是需要控制水平胺改性。

So he called the substance a "vitamine"-- an amine necessary for life.

所以他把这种物质叫做"vitamine"——一种生命所需的胺类化合物。

I think that it is necessary to have an environment to practice among other highly skilled skaters.

我认为在一个有很多高手的环境里训练是很重要的。

It's necessary to do large amount of exercise, if you want to learn English well.

要学好英语，大量的练习是必要的。

Dihydromyricetin have many physiological activities, and its source is broad. Ampelopsis grossedentata possess DMY with high content. Now the research focusing on DMY is about pharmacological aspect. In order to make the best use of DMY, it is very necessary to study on extraction purity and application character of DMY.

二氢杨梅素具有多种生理活性，来源广泛，在显齿蛇葡萄中具有很高的含量，目前对其的研究主要为药理方面，为了真正实现物尽其用，进一步系统研究其提取纯化和应用性质等是非常必要的。

When deep cycle batteries are used in boats, it is necessary to have considerably greater amperage than that required by the engine starter.

当深循环电池中使用的船只，这是需要有相当大安培，比所需要的发动机起动。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。