如果你不知道自己的胆固醇水平，最好去查一下。
If you don't know your cholesterol level, it's a good idea to have it checked.
准备出国旅行真的会很有压力，尤其是如果你不知道会发生什么。
Preparing to go traveling abroad can be really stressful, especially if you don't know what to expect.
如果你不知道自己想要什么，你可能会到头来得到自己不想要的东西。
If you don't know what you want, you might end up getting something you don't want.
如果你不知道如何交朋友，找出原因。
如果你不知道自己的血型，人们可能会感到惊讶。
People might be surprised if you don't know your blood type.
如果你不知道“miner”的意思，试着看单词的组成部分。
If you don't know the meaning of miner, try looking at parts of the word.
如果你不知道自己上大学的目的，上大学有什么用？
What is the use of going to college if you don't know what you're going there for?
皮草正义项目的总监克里·麦克里说：“如果你不知道海狸鼠每年都在破坏大量的湿地，那么说使用皮草没有愧疚感听起来会很疯狂。”
"It sounds crazy to talk about guilt-free fur unless you understand that the nutria are destroying vast wetlands every year", says Cree McCree, project director of Righteous Fur.
在这个时候，如果你不知道自己有多少资本，就很难向别人推荐如何投资。
It's hard to recommend how to invest at this time without knowing how much capital you have.
如果你不知道怎么做，参照上一条。
If you don't knowhow, imitate as described in the previous tip.
如果你不知道要去哪里的话就很难达到你的目标。
It's difficult to reach your destination if you don't know where you're going!
如果你不知道，你可以使用通用名来占位。
常言道，如果你不知道要去哪里，随便哪条路都可以。
As the old saying goes, if you don't know where you're going, any road can get you there.
如果你不知道他们的名字，那也很容易确认到-去问吧。
If you don't know their names, then it's easy to find out - just ask.
的时候，如果你不知道答案，就说，我不知道。
'and you don't know the answer, try saying,' I don't know. '.
如果你不知道，如何做矩阵乘法，再看看相关笔记吧。
OK, so if you don't remember how to multiply matrices, please look at the notes on that again.
如果你不知道谁做了某个动作，那使用被动语态会是最好的选择。
If you don't know who is responsible for an action, passive voice can be the best choice.
如果你不知道企业内部正在发生的事情，就不可能掌控一个企业。
You cannot be in control of a business if you don't know what is going on.
如果你不知道你已经怀孕，你可能会误以为你的经期来了。
If you don't know you're pregnant you may mistake this bleeding for your period.
如果你不知道你已经怀孕，你可能会误以为你的经期来了。
If you don't know you're pregnant, you may mistake this bleeding for your period.
所以，如果你不知道你在做什么，你将会陷入到大麻烦中。
So if you don't know what you are doing, you could get yourself into a lot of trouble.
如果你不知道你的想法从哪里来，你可能在模仿一个模仿者。
If you don't know where your ideas are coming from, you're probably imitating an imitator.
如果你不知道你真正想做些什么，去寻求指引，你会搞清楚的。
If you don't know your true expression, ask for guidance, and the lead will come.
如果你不知道怎样才能与他人良好沟通，那么学习些沟通技巧并付诸实践。
If you don't know how to communicate in a healthy way, then learn how to and begin to implement these skills.
如果你不知道这些心应该是“Play”的意思，你认为它什么呢？
If you didn't know that these hearts were supposed to say 'PLAY', would you see it anyway?
如果你不知道自己的不足在哪，你可能会困惑于为什么难以取得进步。
If you're not aware of some of your weaknesses you may have a hard time improving but not be able to pinpoint why.
如果你不知道，一定去人事处了解清楚，并确保你可以充分利用好它。
If you don't, go to your human-resources department to find out what you qualify for and make sure you take advantage of it.
如果你不知道这些歌，那你应该去听听……或者，这只能说明我是老了。
If you don't know these songs, you should. Or maybe I'm just getting old.
如果你不知道这些歌，那你应该去听听……或者，这只能说明我是老了。
If you don't know these songs, you should. Or maybe I'm just getting old.
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