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。
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。
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。
"It took me until I was fifty-five years old to think about all this in any detail," he went on, "and by that time I had lived through over twenty-eight hundred Saturdays."
他接着说：“我直到55岁才认真地去思考这一点。”到那个时候我已经度过了2800个星期六了。
“It took me until I was fifty-five years old to think about all this in any detail”, he went on, “and by that time I had lived through over twenty-eight hundred Saturdays.
“我直到55岁时才详细思量了这一切，”他继续说道，“那时我已经活过2800多个星期六了。
In that period of time, whether it be fifty years, ninety years or a hundred years, we go through all kinds of problems and difficulties.
不管是五十年，九十年或者一百年，在这段时间里，我们经历了各种各样的问题和困难。
The Mexicans also practised a similar purification at the end of every fifty-two years, in the belief that it was time for the world to come to an end.
墨西哥人每过五十二年也要举行一次净化典礼，他们相信世界五十二年结束一次。
Fifty years is a long time in one's life.
五十年在人的一生中是很长的一段时间。
If pollution continues to increase at the present rate, aerosols in the atmosphere will cause the onset of an ice age in about fifty years' time.
如果污染按目前的速度持续增加，大气中的悬浮物会导致未来五十年内一个冰河时代的开始。
If pollution continues to increase at the present rate, aerosols in the atmosphere will cause the onset of an ice age in about fifty years' time.
如果污染按目前的速度持续增加，大气中的悬浮物会导致未来五十年内一个冰河时代的开始。
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