如果你想去上1点的课，你可以这样做，但是一定要和我的助教安排一下。
If you want to go to class at 1:00, you're welcome to do so, but please arrange it with my assistants.
但让我感到奇怪的是，一开始电影音乐并不一定要与屏幕上的一致。
What's strange to me though, is that at first film music didn't necessarily correspond to what was on the screen.
一定要在你的笔记中包含老师重复或写在黑板上的信息。
Be sure to include in your notes information that your teacher repeats or writes on the blackboard.
如果一定要来，我们至少要成双成对地来；那我们基本上就没事了。
If we have to come, we come in couples, at least; then we're generally all right.
如果Hiccup 冒着危险去和这条龙做朋友，那它一定要是世界上最可怕的巨龙。
If Hiccup was going to take a risk and befriend a dragon, it had to be the most frightening dragon in the world.
如果你的家庭作业涉及到上网，而你没有自己的电脑，那么一定要在家庭电脑上“预定”一些时间，或者可以在学校图书馆使用一台。
If your homework involves going online and you don't have your own computer, make sure you "book" some time on the family computer, or can use one in your school library.
我们一定要争一口气，把祖国工业上这项空白填补上。
We are determined to bring credit to our country by filling this gap in our industry.
租车比买车也复杂得多，所以一定要仔细阅读租约条款，保证读明白了你即将签字的那份租约上的每一条。
Car leasing is also more complex than buying so always closely read — and be sure you understand — every proviso of the lease contract before you sign.
现代古巴三明治一定要在三明治压板上烤到奶酪融化为止。
A modern Cuban sandwich is always toasted in a sandwich press until the cheese melts.
如果你是用蓝色的衣服去配蓝色的帽子，颜色上一定要很相近。
If pairing a blue suit with a blue hat, the colors must match fairly closely.
基本上可以这么说，当然了，你得练习你的任务，但是并不一定要从头练到尾。
Basically, what we say is, yes you do have to do the task, just not for the whole time.
但我却不能从《血色子午线》上转过脸去，因为我知道该如何去读以及为什么一定要去读这本书。
But I cannot turn away from Blood Meridian, now that I know how to read it, and why it has to be read.
所以信息和知识一定要对你，适用，在必要的时候，来做生意上的决策。
So information and knowledge has to be suitable for you to make your business decisions when you need to make them.
在列举曾做过的工作时，一定要将焦点放在招聘负责人希望看到的内容上（当然，不要撒谎）。
When you are listing your bullet points beneath each job title, really focus on what that recruiting director wants to see (without lying, of course).
因此，要注意的是一定要确保画布对象已经全部渲染到屏幕上；否则输出文件将是空的。
Therefore, take care that the Canvas object in fact has been rendered to the screen; otherwise the output file will be empty.
不莱梅在财政上很吃紧，但并不是一定要出售他，不过现在不莱梅的预算宽裕了不少。
Werder Bremen have some financial problems and, although it was not a must to sell him, they are a little relieved for their budget now.
一定要回复每一条你博客上的评论，而且如果你发现其他人的博客上提到了你的博客，要回贴感谢博主。
Always respond to comments on your blog and when you detect a mention of your blog on another blog, thank that blogger in the comments of the post.
一定要记住，直到您可以在屏幕上看到成果，否则就不算完成。
Keep in mind that to them, it's not done until you can see it on the screen.
如果你在菜单上看到酸辣浓汤，那你一定要点。
一定要注意，确定性因子实际上是一个统计学概率的估计值，表示正确识别目录的概率。
It is important to note that the certainty factor is actually an estimate of the statistical likelihood that the category was identified correctly.
然后有三张专辑一定要放在一起听，虽然每张专辑上都有特别要注意的歌。
And then the three that follow really have to be heard as a whole, though there are particular songs on each of those albums.
我知道有一门课我一定要上的，那就是电脑程序。
One course I know I'll take is advanced computer programming.
为了保证你不断的提醒自己你指定的时间，一定要确保 你会每天都看的日历上的信息是有效的。
To keep yourself reminded of the time you've designated, make sure this information is available on the calendar you're most likely to look at daily.
如果你不小心把红酒，或是别的什么洒在了白短衫上，一定要克制住自己冲进卫生间把冷水泼上去的冲动。
When you spill red wine on your white blouse — or anything else for that matter — resist the urge to run to bathroom and splash cold water on it.
我们是社会性动物，生物学意义上的父母并不一定要抚养孩子。
We're social animals and the biological parents do not necessarily need to raise children.
她说，这件事情给了我一个实实在在的教训，以后在博客上发牢骚之前一定要三思。
'This episode definitely taught me to think twice before airing grievances in the blogosphere,' she says.
为什么英语就一定要把自己截头去尾地放在两英寸显示屏上？
Why does the English language have to fit on a two-inch screen?
为什么英语就一定要把自己截头去尾地放在两英寸显示屏上？
Why does the English language have to fit on a two-inch screen?
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