By 2050, if nothing changes, that number will have trebled.
如果情况没有改变，那么到了2050年这个数字将会翻3倍。
Funny is that the time from day to day, as if nothing changes, but when you look back, everything changed.
好笑的是，时间一天天过，好像什么也没改变，但当你回头看，每件事都变了。
As 2009 ends, the climate situation appears to be worse than anyone had thought, with 4c temperature rises a certainty within 50 years if nothing changes.
随着2009年结束，气候形势似乎更加严峻，超出了人们的想像——如果再不改变现状，那么在五十年内，气温肯定会上升4度。
If nothing changes on the page, the incremental backup skips it.
如果一个页面未发生任何更改，增量备份就会跳过它。
If nothing changes, the inefficiencies, pollution, and misery of modern dysfunctional cities may become the norm.
如果不作出任何改变，那么现代功能失调城市的低效、污染、穷困就可能成为常态。
If nothing changes, the inefficiencies, pollution, and misery of modern dysfunctional cities may become the norm.
如果不作出任何改变，那么现代功能失调城市的低效、污染、穷困就可能成为常态。
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