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Said a different way, in the case of the straight-line programs, how long would it take to run a program?
换种说法，在直线式程序里面，运行一个程序要多长时间？
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But I don't really know about how long it would take people to hack, like, the general firewall
但我不知道人们具体要用多长时间才能穿过防火墙，
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With simple branching, how long is it going to take to run a piece of code?
但是在简单分支程序中，执行一个程序,要多长时间呢？
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But notice how long it took us to get there, how many centuries it took.
但是要注意到这要多长时间，它花了多少个世纪。
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That depends on how much sleep you get but dreams leave fragile memories. They fade quickly.
这要取决于你一晚睡多长时间,梦境会留下一些若有若无的记忆，而且很快会淡忘。
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One of the inputs to the problems we're gonna be working on this semester and if you continue on in this world how much thought it takes to implement something, how much time it takes to run something, how much space it takes to run something?
我们将在本学期集中探讨这些问题,或者在课程之后你们也可以继续研究,为实现一些功能要有多少想法，在运行过程中又将花费多长时间，需要多大的空间？
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So these are symbols telling us how long a particular frequency is to endure.
因此,这些符号是告诉我们,某个特定的声音频率要持续多长时间
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How long does it take you to get to your destination with Eurostar?
你坐欧洲之星去目的地要花多长时间？
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How long does it take to get to work by train?
坐火车上班要多长时间？
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We don't know how long it takes to do x 2.
我们不知道要多长时间。
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Oh, but how do I know how long it takes to do x 2?
但是，我想知道用第二种方法,做要多长时间呢？
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