If the world population goes on increasing at its present rate, we may, in fifty years time, be burning up so much energy that we would damage the earths atmosphere.

如果世界人口继续以当前这种速度增长的话，也许，五十年后，这样燃烧如此多的能源将会致使我们破坏地球的大气层。

youdao

Fifty years will seem like a long time to many of the young French Algerians who mark the anniversary today, but in many ways it seems very recent.

五十年对许多如今标志着周年纪念的年轻法属阿尔及利亚人来说似乎很远，但从许多角度来看却又似乎很近。

youdao

If the world population goes on increasing at its present rate, we may, in fifty years' time, be burning up so much energy that we would damage the earth's atmosphere.

如果世界人口继续以当前这种速度增长的话，也许，五十年后，这样燃烧如此多的能源将会致使我们破坏地球的大气层。

youdao

To understand that, you would have to travel back in time two-hundred-fifty-million years.

VOA: special.2010.01.04

All of this the New Criticism had a great deal to do with-- and when I talk next time about the way in which it's been vilified for the last forty or fifty years, naturally I will have this in the back of my mind.

这些都跟新批评派有关-,等我下次再说到这个,在四五十年前饱受诋毁的文学鉴赏方式的时候，我还会想起今天所说的话。

耶鲁公开课 - 文学理论导论课程节选

For the first time in fifty years my country is preparing for war.

BBC: Is the UK government right to deploy British troops?

For the first time in more than fifty years, Cuban citizens can travel abroad without permission from their government.

FORBES: It's Time For The U.S. To End Its Senseless Embargo Of Cuba

The sticker-shock at the pump is a rude reminder that even though energy independence for the United States is closer at hand than at any other time in the last fifty years, energy is still very much a global commodity.

FORBES: Pain at the Pump