太多的人因为没能考虑合适的背景而毁了一张可能很棒的照片。
Too many people ruin what would be a perfectly good shot by failing to consider the backdrop properly.
一张普通电费单可能每月上涨$2或$3。
你很可能会得到将近3个月的时间–即直到你下一张账单寄发为止——才会被切断供应。
You are likely to be given almost three months – until the time of your next bill – before you are disconnected.
Well this third picture you can't probably see too much about but you probably recognize what it is, right?
第三张图可能你们没见过了,但你们能认出这是什么,对吧
So if it went up yesterday, it will more likely go up today, because I'm throwing in a positive number, otherwise a negative number.
所以如果它昨天涨了,那么它几天张的可能性也就比较大,因为我给它的是一个正值,否则就是一个负值。
Before we talk about how to do it-- and we don't have perfect ways to do it yet but I'll describe some of the ways that are used, I want to talk just briefly on this slide about what the goals for gene therapy might be.
在讲具体怎么做之前--,现在还没有任何一种方法是完美的,但我还是要讲讲一些已经应用的方法,我借助这张幻灯片简要介绍一下,基因治疗的可能目标
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