We do morning exercises before classes begin.
上课前我们做早操。
When starting college, most students enjoy a week's stay on campus before classes actually begin.
开始上大学时，大多数学生都喜欢在真正开课前在校园里呆上一周。
If you have other daily routines, such as exercising or talking on the phone with family, work those into your day-to-day life before classes start so that you get a better idea of how they fit in with your schedule.
如果你有其他的日常习惯，如锻炼身体、与家人通电话，你要在开课前将这些习惯融入到日常生活中，这样就能更好地结合这些习惯来进行日程安排。
You should apply early, up to 120 days before classes start.
您应及早申请，最早可提前于课程开始前的120天。
Before classes start up again, think about what you learned.
在课程开始之前，想想你学到了些什么。
You are required to purchase the readings before classes begin.
上课之前，你必须购买阅读材料。
He has to get up before 7:10 and go for a run before classes begin.
他不得不在7：10前起床，然后在课前晨跑。
She always gets her homework done before classes and the homework comes out good.
课程结束至考试期间，电话联系多次，都有在家认真刷题准备。
Withjust over a week to go before classes begin, she has two active campaigns going.
秋季班开始的一周前，她就发起了两个项目。
Shen Fang gets to school at half past seven in the morning, half an hour before classes begin.
沈芳早晨七点半到校，比上课时间提前本个小时。
In order to guarantee yoga exercises, members should enter the classroom 5 minutes before classes.
为保证您及他人的练习，请于课前5分钟进入教室。
In order to get a parking space at Arkansas State University, one has to arrive nearly an hour before classes start.
为了能在阿肯瑟州州立大学获得停车位，你就必须在上课开始前差不多一小时就得到达。
Before classes, we must preview the lesson by repeating after the tapes and look up the new words in the dictionaries.
类之前，我们必须通过重复预览教训后，磁带和查找新单词在字典。
A cook reported seeing two men dressed in camouflage inside the building just before classes started Thursday morning.
在星期四早上，一个厨师报警说在上课前看到了两个伪装的男人。
Knowing that new students will arrive on campus a little bit early, I send them an email the week before classes begin.
确信新生们将稍微早一点到校，我在开课一周前给他们发了一封电子邮件。
Before classes in ES6 there were a couple ways to create this structure. One way would be using a function as a constructor.
在ES 6类的概念出现之前也有一些方法来创建这样的数据结构。一种途径是使用函数来作为构造器。
And if you are coming as a student for the first time, you cannot enter the country more than thirty days before classes begin.
并且，如果你是第一次以学生身份前往，在课程开始前的30多天内，你是不允许入境的。
Provide update information on Influenza a H1N1 to staff and students. Instructors will show the important messages to students before classes begin.
定期提供甲型h1n1流感资讯予同事及同学，老师在上课前向同学展示需知事项。
Ellie's first winter break was uneventful, and when she returned to her dorm on the day before classes started she was surprised to find a small note taped to her door.
艾莉的第一个寒假过得平淡无奇，当她在开学的前一天回到学校时却惊奇的发现门上贴着一张便条。
[2008-07-23 16:41]--Teenagers need nine hours of sleep a night and parents can help by getting them back on a school sleep schedule before classes begin, researchers suggest.
研究人员日前指出，中学生每天需要九个小时的睡眠，在开学之前，家长们要帮助孩子逐渐回到上学时的作息时间上来。
Nearly half of high-earning, college-graduate parents enrolled their children in arts classes before they were 5, compared with one-fifth of low-income, less-educated parents.
将近一半的高收入、大学毕业的父母在孩子5岁前就让他们上艺术课；而在低收入、教育程度较低的父母中，这一比例仅为五分之一。
All of his classes were all full even before the semester began because many students who were eager to learn already booked in.
甚至在学期开始之前，他所有的课都已经满了，因为许多渴望学习的学生已经预定了。
His classes were great and we were better at English than before.
他的课很好，我们的英语比以前更好了。
Before writing the services classes, download and install the required AMFPHP files.
编写这些服务类之前，下载并安装需要的AMFPHP文件。
Take classes in many different subjects before picking your major.
在选择你的专业之前去不同的学科听课。
The initialisation of tracing: tracing starts almost immediately after the JVM is launched but before any classes are loaded.
跟踪的初始化：跟踪在JVM启动之后几乎立即启动，这发生在装载任何类之前。
However, sometimes you may want to modify classes before loading them, or you might want to just investigate data structures without loading the classes at all.
但有时您可能希望在载入类之前对其加以修改，或者希望在不载入类的情况下研究数据结构。
However, sometimes you may want to modify classes before loading them, or you might want to just investigate data structures without loading the classes at all.
但有时您可能希望在载入类之前对其加以修改，或者希望在不载入类的情况下研究数据结构。
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