首先

First, the finite difference time domain method with various boundary conditions is introduced.

首先，我们介绍时域有限差分法和相关的边界值条件。

First of all, you should choose the right weight of the bowling ball for you.

首先，您应该选择正确的重量，保龄球球给你。

First of all, he gives up any notion of making Edwards physically unattractive; even in caricature Edwards is handsome, but boyishly handsome. The implication is that this boy is too inexperienced for the job of president.

首先，他打消了丑化爱德华兹外貌的主意；甚至在讽刺性漫画中爱德华兹都是很帅的———但那是一种年轻小伙式的帅气，其暗含的意思是，这个小伙子太没有经验了，不能胜任副总统之职。

Well, first of all it will put you in the very highest tax bracket.

那么，首先，它会将你在极高税支架。

In the approach,two basic algorithms named grammar induction algorithm and alignment algorithm using Bracketing Transduction Grammar are adopted.

这种方法有两个基本的步骤。首先，通过语法归纳分别从源语言和目标语言中获取语义类和短语结构类。

First, this article has summarized the brain drain reason and the consequence analysis.

首先，本文简述了人才流失的原因及后果分析。

First,you should brainstorm your ideas.

首先，你得整体回顾一下你的想法。

First of all, let's acknowledge that there are two popular models for branching.

首先，我们要承认至少有两种分支流行的模式。

First of all, i don't think i should talk to a brazenfaced man by courtesy cause i refused your conversation at begining,maybe your lamb brain can not help you to understand so that i was remorsing on you; second of all,my business has ever gave you a shut and you wouldn't worried about i could find a good man or not.last one,you should hold a correct instance when you want to accost with a lady.unfortunately,my mood was getting up on the wrong side of the bed!

（首先，我不认为同一个厚脸皮的人讲话需要礼貌，因为一开始我已经很明显拒绝了我们之间的谈话，也许你的智商无法理解我婉转的拒绝方式，关于这一点，我对你表示同情；第二，我的事与你无关所以你无须费心我以后能不能有好的归宿；最后，下次和女士搭讪最好能先察言观色以确定是否是适当的时机。很不幸的是，刚巧我今天心情很恶劣） dQ：，pe7A

First, let's go to Brazil.

首先，让我们去巴西看看！

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。