Elvarez、Yuehua 主讲
Elvarez、Yuehua 供稿
Leo(LeoTsui)、精灵兔、Scarlett(ScarlettSun9)整理
Scarlett、 Leo、AthenaX(athena-xcy)参与讨论，对本文亦有贡献
由于字幕的短时性，还原指代内容会对学习者的理解有很大的帮助
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就像小时候大家玩过的那种动画书
It's like as a kid, if you ever had one of those paper flip books
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一本书就是一叠图画
where there's tons of drawings in them,
在上例中，them 被译为“一本书”
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也就是说 在这个循环第1次迭代时
So what this effectively means is on the first iteration of the loop, when
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i等于0 就像这样
i equals 0, this looks like this, effectively.
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再次迭代时i等于1 就变成了这样
When i then becomes 1 on the next iteration, then you're doing this.
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最后一次迭代时 i等于2 就是这样
When i becomes 2 on the final iteration, it looks like this.
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而当i等于3时 由于3不小于3
When i becomes 3, well, 3 is not less than 3,
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这个循环就停止执行了
and so it doesn't execute again.
上例中，某个循环（loop）第一次出现是在 72 行，然后教授进行了一连串的说明，直到第 77 行才再次出现代词 it，这时为了表意更清晰，译为“这个循环”
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如果我继续拉近 最终你能看到的
And if I go an even further, you can actually see
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就是组成这个表情的像素小方块
the tiny little squares that compose this image,
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在这个范围中 大部分像素点都是黄色的
most of which at the zoom level are yellow,
上例中 which 指代的是像素小方块（the tiny little squares），故 most of which 译为“大部分像素点”
长的定语从句在翻译时，经常在中文中被分成两句，和英文的习惯不同，中文习惯在名词前放过长的修饰，而英文会分成两句，用代词来指代重复的名词
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简单来说 在科学或金融
So long story short, any time you have scientific or financial
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还有其他涉及大量数据的领域
or any sort of large data sets that involve big numbers and lots of them
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时间一长 精度不足就会暴露出问题
and lots of time, this is a problem.
语境是在这几句之前教授举了火箭和金融领域的例子，花了比较长的篇幅解释计算机的精度在实践中的重要性，81-83 句属于总结部分，这部分的核心问题“精度不足”需要还原出来
简单来说就是把字幕中没讲出来但教授实际有传达的意思翻出来，在合理范围内进行补充，包括手势、时间、空间等，便于观众理解。
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要不是我刚才一时好奇 嫌小数点后7位不够精确
I mean, we would never have known this if I hadn't gotten greedy
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求出了后50位数 也不会知道后面的数字不全是0
and looked at 50 decimal places instead of 7, which was already pretty precise.
这里讲的是2/10并不正好等于0.2，随着小数点后位数的增多，2/10实际上会稍大于0.2，“后面的数字不全是0”就是结合教授的演示对“this”的解释。在视频里这个部分就是 显示屏上有0.20000000XXXX 一连串0之后在XXX的位置出现了非0的数
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大家注意 我之前的代码都是这么排版的
And notice stylistically, I've been doing this instinctively for some time.
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适当缩进 读起来会更加方便
Everything's nicely indented just to make it more readable,
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就跟Scratch里的功能块差不多 虽然排版上的留空
quite like the Scratch blocks, even though again a lot of white space
这个也是结合了教授在显示屏上演示的界面，把“white space（空白，留白）”补充解释为了“排版上的留空”。
由于中英文用词/表达习惯不同，有时候直译就会显得翻译腔很重，所以在处理的时候可以考虑“正话反说”、“反话正说”，让字幕看起来更符合中文的表达习惯。
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计算机科学离不开权衡利弊
and computer science more generally there's always a trade-off.
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使用双精度浮点数 在精度上的确更占优势
And yes, if you use a double, you will avoid this problem a bit more,
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但代价是什么呢
but what price will you pay, so to speak?
在上例中，“you will avoid this problem a bit more”直译为“你就能更好地避免这个问题”多少会有点别扭，此处“避免问题”反译成了“占优势”。
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有时你需要的不是一整段 一整句
If you don't want a whole string, like a whole word
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也不是一个完整词 而只是一个字母
or a paragraph or sentence or whatever, you just want one character.
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这时字符类型就派上用场了
You can actually use what's called a char or character.
上例中“don't want”翻成“你并不想要……”感觉也并不那么通顺，此处结合上下两行，把否定后移，“不想要”反译成“需要”。
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我先试运行看看
So if I go ahead and run this-
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有点看不见我把终端窗口拉上来
let me pull up the terminal window so I can see it.
上例中“so I can see it”略过不合适，翻成“这样我就看得见了”也不合适，索性正话反说
常见的可能就是 否定词/表示否定意思的词
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这些格子画成这样是因为空间有限
And the fact that they wrap around is just an artist rendition.
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你可以想象一下 就像这样从左到右排
These things you can think of just virtually as going left to right,
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跟格子并不像 但画出来 只能这样了
not in any kind of grid, but physically, they look like this.
“an artist rendition”直译过来是艺术家对某种事物的艺术化诠释，在本例中的语境时教授画格子没有地方画了