They say it will help scientists better understand how to protect long-beaked echidnas and the areas where they live.

VOA: special.2009.07.07

Said a different way, in the case of the straight-line programs, how long would it take to run a program?

换种说法，在直线式程序里面，运行一个程序要多长时间？

麻省理工公开课 - 计算机科学及编程导论课程节选

But I don't really know about how long it would take people to hack, like, the general firewall

但我不知道人们具体要用多长时间才能穿过防火墙，

理想是当密码专家 - SpeakingMax英语口语达人

For your time horizon, think about how long the money will be invested, not how long you have until retirement.

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It can also tell how long you sleep each night, as well as how long it takes you to nod off.

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You should know how long key employees have been in their roles and know how long they want to stay there.

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