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So, there may be a lot of used copies floating around.
所以会有很多旧书
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When transcription happens and it turns out that there's a whole biology associated with this, including molecules that are floating around inside your cells called transcription factors, and their job-- they are molecules that are about particular genes and what some of the sequences and are able to turn on those genes inside cells, to make them transcribe.
研究证明,当细胞转录时,还有与之相关的一整套生物机制在运作,包括一种在你细胞中飘浮着的,称为转录因子的分子,它们的工作就是,它们知道该转录哪一段基因,该转录哪一段序列,然后把这些细胞中的基因激活,进行转录
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C So here I'm declaring a variable called c, and I'm pretty much translating the formula from the slide using the characters on my keyboard to a floating point value.
这里我声明了一个变量，然后我把那个幻灯片上的公式,用键盘上的字符翻译成了,浮点数值。
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Last thing to say is why would you want to have exceptions? Well, let's go back to that case of inputting a simple little floating point.
最后要讲的是为什么有异常处理？,回到输入一个简单的小浮点数的例子,如果我期望主要是。
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You have a block here and then you have something above there floating in mid air.
你在这里放一个木块,让某物漂浮在木块之上
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For days I had dreamed about a huge, white boat floating on a vast body of water, but when my mother took me down to the levee on the day of leaving, I saw a tiny, dirty boat that was not at all like the boat I had imagined.
那些天我总是幻想着一艘,巨大的白船徜徉在宽阔的河上，但当出发那天,妈妈将我带到岸边时，我只看到一只又小又脏的船,完全不是我想的那样，“
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Milton's own faculty of memory - this is the idea that I'm going to be floating here - seems to provide something like, or pose a stumbling block or an obstacle for, his attempt to write an original, divinely inspired poem.
在这里我想说,弥尔顿自己的记忆系统,似乎想提供某种东西，或者想在他写出一部原创的，伟大的诗作的尝试上设置一个障碍。
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If I had a beaker sitting on the table here and it contained a million blue double stranded DNA molecules and a million red double stranded DNA molecules and I heated it up and added a little base, I'd soon have four million individual strands just floating around in the solution because I've broken up this hydrogen bonding and the DNA molecules fall apart.
假如我这里有一个烧杯 里面,盛有一百万条蓝色DNA双链和,一百万条红色DNA双链,然后我稍微加热一下烧杯,并且加一些碱,很快我就有了四百万条DNA单链,漂浮在溶液里,因为我已经使得氢键断裂,DNA双链也随之打开
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It just throws the decimal point away and that's because, again, these are ints and the answer intuitively should be a floating point value, but I need to be more specific.
它直接把小数点后面的数值丢弃掉了，因为，凭直觉，那些整型数和结果应该是一个浮点数据,但是我需要一个更精确的数值。
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So what that means is the compiler is actually going to first "cast" so to speak 13 from whatever it is - to a float -- to a floating point value -- and then perform the division for us.
所以这里的意思是编译器将,做“计算“，譬如13这样一个浮点数,-到另一个浮点数-,然后为我们处理除法。
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You can run into issues of things like overflow, underflow, with floating point numbers and when you see a whole bunches of ones, it's particularly a good time to be suspicious.
来看看哪儿会出问题，你可能会碰到浮点数中的溢出和下溢问题,当你碰到一系列这种问题后，可能就会适时的开始怀疑结果的正确性。
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0 >> David: Yeah, so I very deliberately changed this 9 to a 9.0 so that my math would actually be floating point math involving real numbers and not just integers.
>，大卫：是的，我故意地把9改成9,那样我的数学实际上就是浮点数的了,包括实数，不只是整数。
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Need to get the base in. Second thing I want to do, I need to get the height, so I'm going to input a value for the height, also as a float, a floating point.
也就是输入底的值，第二件我想要做的，事情就是得到三角形的高,因此我会输入一个值作为三角形的高，同样也是一个浮点数。
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There's no decimal point; there's no point zero; there's no floating point value, it's just a hardcoded integer.
这里没有小数点，这里没有;,这里没有浮点数值，它只是一个整型数字。
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ReadFloat We'll look at it in a second. Let me sort of set the stage up for this -- suppose I want to input -- I'm sorry I want you as a user to input a floating point number.
名字叫,我们来看一会，我先来设置下情景-,假设我想输入，抱歉,我希望你们作为用户来输入一个浮点数。
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So a floating point value again is a number with a decimal point, so it depends.
一个浮点型数据就是一个,带小数点的数。
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Here I actually need to tell the computer, "Give me some bytes in ram in which to store a value, and that value's going to be a floating point value."
这里我的确需要告诉计算机，“给我一些字节内存,来存储一个值，那个值将是,浮点型的数值“
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And I can fix this just by changing one of those values to a floating point.
所以我可以通过改变其中一个,整型数为浮点数。
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Instead divide an int by a floating point value.
我们用一个整型数除以浮点数。
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GetFloating-- GetFloating-- GetFloat for a floating point number.
还有-,得到一个浮点型的数据，并赋给一个浮点型的指针。
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If we did that, if we moved f minus 32 over to the left, that would give me a floating point answer because f is a float.
如果你那样做，如果我们把，放前面，那将会给我们一个浮点数答案,因为f是浮点数。
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