To learn his system, people must first know how to write letters of the alphabet and learn which sounds they represent.
为了学习他的系统，人们必须首先知道如何书写字母表中的字母，并学习它们的发音。
When did you first know you wanted to be a sushi chef?
你什么时候开始知道你想要成为一名主厨？
For you to be able to read your friends' tweets, Twitter must first know who you are.
要能够读取朋友的tweet,Twitter必须首先知道您是谁。
If you want to be able to cope with life's little surprises you have to first know exactly where your money is going.
如果想轻松的应付生活中的意外，我们必须首先知道我们的钱花费到那里了。
To understand semantic interoperability, we have to first know various technologies and methodologies behind it, which are collectively called the semantic spectrum.
要想理解语义互操作性，我们首先必须了解其背后的各种技术和方法，这些技术和方法统称为语义谱。
First of all, you'll need to know the techniques Rembrandt used when he applied paint to canvas—his brushstrokes, how thickly he applied his paint.
首先，你需要知道伦勃朗在画布上使用颜料的技巧——他的笔触，他的颜料有多厚。
To make members of a team perform better, the trainer, first of all, has to know their strength and weakness.
为了使队员们表现得更好，教练首先得了解他们的优点和缺点。
You know I said that when you told me first.
你知道，你第一次告诉我的时候，我就这么说了。
The Arabs first made the soap that we know today.
阿拉伯人最先制造了我们现在所知道的肥皂。
First, we know that all human beings have a language of some sort.
首先，我们知道所有的人类都有某种语言。
Know yourself! This is the first step towards success.
了解你自己！这是走向成功的第一步。
First, friends, relatives, and co-workers may let us know that they value us.
首先，朋友、亲戚和同事可能会让我们知道他们重视我们。
Third, bring a first aid kit and know how to use it.
第三，带一个急救箱并知道如何使用。
I know your first name, but I don't know your family name.
我知道你的名字，但不知道你的姓氏。
I know a place where the food is first-class.
我知道有一个品尝一流美食的地方。
Her first name was Mary. I don't know what her surname was.
她的名字叫玛丽，我不知道她的姓是什么。
I know it sounds corny, but it really was love at first sight!
我知道这听起来像陈词滥调，然而的确是一见钟情啊！
You don't know the first thing about farming.
你对耕种一无所知。
That's the first question, you know.
你知道，这是第一个问题。
Look here--I'll get suspicious of you, first thing you know.
听着——首先你要知道，你有点可疑。
Do you know what the first Olympic mascot was?
你知道第一个奥运会吉祥物是什么吗？
You know I'm really dreading the first assessment.
你知道我真的很害怕第一次评估。
We know that the first colony that the Greeks established was in the Bay of Naples on the island of Ischia.
我们知道希腊建立的第一个殖民地是在那不勒斯湾的伊斯基尔岛。
In the first experiment of buttered toast, we know the toast landed butter side down about 620 times.
在第一个奶油吐司的实验中，我们知道，奶油的那一面会掉下来大约620次。
You know, I met my girlfriend's parents for the first time only yesterday.
你知道的吗，我昨天才第一次见到我女朋友的父母。
We'll see after the first leg. We'll know more then.
打完首回合再看吧，到那时我们了解的情况更多。
We didn't even know at first that the three texts on the Rosetta Stone contain the same information.
一开始我们甚至不知道罗塞塔石碑上的三段文字包含着相同的信息。
You should know how to do basic first aid.
你应该懂得如何实施基本的急救。
You won't know what he means at first, for it is difficult to understand him.
起初你不知道他是什么意思，因为很难理解他。
You won't know what he means at first, for it is difficult to understand him.
起初你不知道他是什么意思，因为很难理解他。
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