"We estimate in WHO that over thirty million lives can be saved in the next ten years by simple measures -- reducing the level of salt by fifteen to twenty percent, reducing the amount of tobacco, and increasing the number of people who are at risk of a heart attack and stroke to be on simple preventive treatment."
VOA: special.2011.05.11
Suppose someone has a contract that promises to pay an amount each period over a number of years.
假设某人有一份合约,承诺在数年内的不同时段内分开支付
That means that the price of each share should decline by the amount they paid out divided by the number of shares.
这就意味着每股价格会降低,降低值为,总开支除以总股数
Twenty-eight percent-- only 28% are eating the recommended amount of vegetables, so this is a pretty discouraging number.
8%,只有28%的人蔬菜摄入达标,这些数字可真叫人泄气
You rotate the letters by a deterministic amount, by a fixed number of steps so that the end result is actually something that can be reversed.
你用确定的数量旋转那些字母,通过一个固定数量的步骤,这样,最终结果是可以把它,反加密出来。
We saw some quadratic algorithms, typically those are things with multiple nested loops, or iterative or recursive calls, where you're doing, say, a linear amount of time but you're doing it a linear number of times and so it becomes quadratic, and you'll see other polynomial kinds of algorithms.
我们看过一些平方算法,他们一般进行了多次嵌套循环,或者递归迭代调用,对一个线性操作调用线性次,这样就变成平方次了,以后你们能看到,一些多项式算法。
So in other words, every time I merge the point that I kept emphasizing verbally there and that I'm only touching each number once, means that we have to account for the amount of time it takes to merge N which is going to be just N. Now, this is again one of these cyclical answers.
换言之,之前在做合并时,我不停地强调,对每个数字我只碰了一次,这就是说,我们要记录合并所花的时间量,也就是这里的,这又是一种循环性的答案。
It's changing the number of shares outstanding, so the value of the company declines by the same amount; it has to, as if they had just paid a dividend.
它改变了发行股数,所以公司价值减少了相同的数量,必须如此,就好像支出了股利一样
Remember last time, I said that there's different kinds of complexity in our code, and I suggested for simple branching programs, the amount of time it takes to run that program is, in essence, bounded by the number of instructions, because you only execute each instruction at most once.
但是这里有个很重要的点,记得上节课,我提过在我们的代码中,有不同种类的复杂度,而且我还说了对于简单的分支程序,运行这种程序需要的总体时间,大体上,是和指令的数目相关的,因为每个指令只会被执行最多一次。
One, there's a growing amount of literature showing that Mediterranean--eating the Mediterranean Diet has protected against a number of diseases, but also there was a study on this that just came out on Friday, and I'd like to discuss the results of that particular study.
首先越来越多的文献指出,地中海式饮食可以预防多种疾病,另外上周五有一篇新发表的研究,我一会儿会讲讲这项研究的研究结果
Because you can come up with an infinite number of values but if you have a finite amount of space and certainly a computer has a finite amount of disk space or RAM, you have to make approximations.
你可能会碰到一些无限的值,如果你只有有限的空间,废话,电脑当然只有一个有限的磁盘空间,或RAM,我们得做一些近似处理。
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