首先

First, for the different molar ratio of two monomers mixtures,the different molar ratio of homogeneous polymer is obtained by choosing the proper condition(the reaction temperature is 60℃-70℃, initiator benzoyl peroxideis 0.1wt%- 0.2wt%)from carrying out bulk copolymerization and its refractive index has been measured respectively by the method of minimum deviation angle.

首先，对不同摩尔比值的两单体混合液，选择适合的工艺条件(共聚温度60℃-70℃，引发剂过氧化苯甲酰0.1wt%-0.2wt%)进行本体共聚反应，获得各摩尔比值下的匀质聚合物；并用最小偏向角法分别测量了由系列匀质聚合物制作的三棱镜的折射率。

Firstly, the inner wall of artillery is illuminated by lighting lamp and then its image is obtained after reflecting by prism,lastly, Angle of twist is calculated through the analysis of digital image.

首先，用光源把身管内壁照亮，然后经过锥镜反射后内壁在CCD相机中成像，最后对该数字图像进行分析，计算得到缠角。

First, the most important angle is that of proximity to the net.

首先， 最重要的角度是对网的接近程度。

Well, first, there's a nature inside of us that wants us to be in angst.

唔，首先，就会有一种自然的内我们，要我们在焦虑。

First , what is meant by anguish ?

首先，痛苦是什么意思？

I can tell you about the animator job. First, it's a lot of fun!

我可以告诉你一些关于我的动画工作，首先，这非常有趣！

Anne Sullivan Macy, who came to me when I was a child opened the outer world to me.

首先，我要好好地端详我的老师安·沙利文·梅丝夫人的脸，她在我年幼的时候就来替我打开了外部世界。

Annie: Well, first of all, that's not true.

首先，事情不是这样的。

It is proved that the anode effect can be predicted and positioned by analyzing the vibration signal of poles.

本文的具体工作如下：首先，对阳极振动信号进行了理论分析和实验。

At the beginning, I would like to give my sincere thanks to Cindywang and an anonym for their blames about why I do not write my blog in English.

首先，我对 CINDYWANG 和一位匿名网友表示感谢！他们对我不用英文写博文颇有微词。

As of Tuesday, Google's results were still censored in China.

截至周二，谷歌的搜索结果仍受中国审查。

In order to make the positive action increase and negative one decrease, the sub-forces of the social factors must be adjusted to form a centripetal force.

在这一过程中，人的主体性发挥是社会有机体健康发展的灵魂。