To use the tool, you first use Purity to instrument your program.
要使用这个工具，您首先要利用Purity来测试您的程序。
The first principle is: "Program to an interface, not an implementation."
第一条是：“面向接口编程，而非面向实现编程”。
Another technique is for the first program to create a channel and some containers.
另一种技术是第一个程序先创建一个管道和一些容器。
The first line of defense in a secure program is to check every untrusted input.
安全的程序中第一道防线是检查每一个不可信的输入。
This is the first program I turn to when I hear of database problems.
在发现数据库有问题时，应该首先求助于这个程序。
The first program to be called Forth was written in about 1970.
大概1970年左右第一个叫Forth的程序写出来了。
To access the Debug perspective, you first need to place a breakpoint into your program.
若要访问Debug透视图，首先需要在程序中放置断点。
To kick off your program, first build the JAR file.
要启动程序，首先构建JAR文件。
The first step to creating your own program is getting your environment set up.
创建你自己的程序的第一步是安装你的开发环境。
To make it onto the Olympic program, a sport first has to be recognized.
一项运动要成为奥运会的一项赛事，首先必须得到认可。
Kneading massage program, males to left to right, the first woman right left.
揉压按摩的挨次，男性先左后右，女人先右后左。
The first task is to initiate the base program that will control and operate the device.
第一项任务是启动控制和操作设备的基本程序。
First of all, I want to make it clear that I am not against the space program.
首先，我要表明的是，我并不反对太空计划。
From the first week of the program, students start to perform in front of camera.
从课程的第一周起，我们的学生就开始在摄影机前进行表演。
The first task of any program is to set up the system control registers.
任一个节目第一任务是设定系统控制记数器。
When your program has stopped, the first thing you need to know is where it stopped and how it got there.
当程序停下来的时候，你要知道的第一件事情就是程序停在了哪儿、程序是如何运行到那儿的。
Yet when the program first started, the student musicians played to an almost empty theater.
然而，当该音乐会项目首次启动时，学生乐手们几乎是面对空无一人的剧场表演。
For the first time ever, a major American TV program, take you to the most Mysterious Place of Earth.
有史以来第一次，美国主流电视节目带你进入中国，这块地球上最神秘的土地！
When I first began to program I would see before me the whole problem all in one mass.
当我刚开始编程时，我眼前看见的是整个问题乱成一团。
The first thing you will need to do is to choose a language to program in.
第一件要做的事就是选择一门语言。
The first program is our show to "thankful heart" sign.
第一个节目是我们表演的《感恩的心》手语动作。
Now the first window running your program has the new var set to its session.
现在第一个窗口运行你的程序已设定会议新功。
To complete the whole study, I have the following program: 1 first complete ESL courses.
要完成整个学习，我有以下计划：1首先完成ESL课程。
Load the program first and name the document you wish to work on.
先装上程序，再叫出你要运作的文件名称。
The first simulation program to generate a group of children in a circle.
程序首先模拟生成一群孩子围成圆圈。
First, it allows those in the program to focus on just one thing: learning.
首先，项目参与者可以只关注一件事：学习。
First, it allows those in the program to focus on just one thing: learning.
首先，项目参与者可以只关注一件事：学习。
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