But we should also ask ourselves, had there been a net present value calculation or a cost-benefit analysis done about whether or not to even try to go to the Moon and back again in a generation, we probably wouldn't have started.

是否有过净现值计算或成本效益分析来决定是否要在我们可能不会开始的代人的时间里尝试去月球再回来。

That surplus amounts to $45 billion, in today's money, between 1960 and 2013.

方法的假设条件是将差额部分视作项不用偿还的负债。从1960到2013，数据换算成现值总计达450亿美元。

Besides possibly triggering a downturn, they reduce the present value of tech companies' profits, most of which lie far in the future.

除了可能引发经济低迷之外，它们还会降低科技公司的利润现值，利润大多还需要很长时间才能兑现。

Investors are adapting to a world of higher interest rates, which reduce the present value of future earnings.

投资者正在适应个利率上升的世界，利率上升会降低未来收益的现值。

If Netflix was to become a one-time purchase product, it would cost at least $2,000 for the basic ad-free plan based on discounted cash flows, which is fancy investor speak for the present value of the recurring subscription.

如变成次性购买的产品，基于折现现金流计算， 基本无广告计划的价格至少为2000美元，是投资者用来表示订阅现值的种花哨说法。

Okay, it's true if we cheat a bit and make one of the--Okay, so what you're saying is I could get 3 forever versus 1 forever, assume these are both present discounted values of future cash earnings.

好的， 如我们稍微作弊并做出其中个——好的，所以你的意思是我可以永远得到 3 对永远得到 1，假设都是未来现金收益的现值。

Theoretically, if he wanted to, he could turn around and sell those pensions to a, you know, they have a present value tied to them based on their potential future payout.

理论上，如他想的话， 他可以转手把养老金卖出去，你知道的，它们有个基于未来潜在支付能力的现值。

So Technically, I mean if you want to give it a present value and say, you know I'm getting paid $50,000 a year and it would take $500,000 to do that.

从技术上讲， 如你想给它个现值并说，你知道我每年赚5万美元， 那需要50万美元才能实现点。

It is buffeting young tech firms particularly hard as the present value of their profits, most of which lie far in the future, are being eroded by rising interest rates.

它对年轻科技公司的打击尤其严重， 因为它们的利润现值（其中大部分是在遥远的未来） 正在被不断上升的利率侵蚀。

You can even build it to be dynamic so it counts the number of periods by itself and will move the present value and future value if you use offset.

你甚至可以将其构建为动态形式，让它自动计算期间数量，并且如你使用偏移函数，它会自动调整现值和未来值。

Now this must be at least equal to the present value of the opportunity to postpone replacement which will result from laying up the equipment; and it may be more.

现在必须至少等于因搁置设备推迟更换的机会的现值；且可能更多。

This year central banks across the rich world have repeatedly raised interest rates, shrinking the present value of the coupons bonds pay out and causing their prices to sink.

今年，富裕国家的中央银行多次加息，缩小了债券支付的票息现值，并导致其价格下跌。

Meanwhile, a smaller proportion of their value came from the promise of distant future earnings, the present value of which fell dramatically as interest rate expectations soared.

与此同时， 他们价值中较小的部分来自于对未来收益的预期，随着利率预期的上升， 未来收益的现值大幅下降。

The current value of the Louisiana Purchase today, now that the land is mostly inhabited and developed, would be about $1.2 trillion just for the land.

如今，路易斯安那购地所涉及的土地大多已有人居住并得到开发，其现值约为1.2万亿美元，仅计算土地价值。

I consider future cash flows and I assume that they're just not going to grow and then I discount it back to their present value.

我会考虑未来的现金流，并假设它们不会增长，然后将它们折现回现值。

Next, as suggested by The Economist in February, would be to transfer the net present value of that income stream to Ukraine.

其次， 正如《经济学人》二月所建议的，可以将该收入流的净现值转移给乌克兰。

Specifically, the present value of future cash flow, as shown right there.

具体来说 未来现金流量的现值，如那上面所述。

Prices and Present Values Whether a home, business, or farm is maintained, repaired or improved today determines how long it will last and how well it will operate in the future.

价格和现值 房屋、企业或农场今天是否得到维护、修理或改善，决定了它能持续多久以及未来的运作情况。

So technically, I mean, if you want to give it a present value and say, you know, I'm getting paid $50,000 a year and it would take $500,000 to do that, I'll count it as 500, you could do that.

所以从技术上讲， 我的意思是， 如你想给它个现值并说，你知道的，我每年赚5万美元， 需要50万美元来实现，我可以把它算作500万， 你可以样做。

'The rate of return over cost', he writes, 'is that rate which, employed in computing the present worth of all the costs and the present worth of all the returns, will make these two equal'.

“成本回报率”，他写道，“是用来计算所有成本的现值和所有回报的现值，使两者相等的比率”。