Russia,according to Mr.Medvedev, must move from an economy based on natural resources to innovation and high tech, which will require democratization.

VOA: standard.2009.11.12

get back to the initial point is going to require some input from outside, like heat or extra work or extra heat or something because you've done an irreversible process.

如果要逆转它,回到初始点，就需要外界的投入，比如额外的功，额外的热量等等,因为你进行了一个不可逆过程。

麻省理工公开课 - 热力学与动力学课程节选

He said the U.N.'s own security will need to be increased during this transition period, which will require adequate funding from member states.

VOA: standard.2010.08.04

Mr.Obama said in those conflicts and elsewhere, U.S.military will require cooperation from the nation's allies.

VOA: standard.2010.05.22

and any peace agreement would require a full Israeli withdrawal from the Golan.

VOA: standard.2009.04.26

Both the Senate and House measures would require nearly all Americans to purchase some form of insurance, while lower-income Americans would receive help from federal government subsidies.

VOA: standard.2009.12.25

Estimated at more than $1 trillion over 10 years, the measure would require most employers to offer health insurance to employees, and prohibit insurance companies from denying coverage based on existing medical problems or impose limits on coverage.

VOA: standard.2009.11.08

Although we run it on a laptop so that we can monitor its operation, the algorithm itself doesn't require a lot of computer power and could easily be run from a chip that has the capabilities of one that's already in insulin pumps or in cell phones."

VOA: standard.2010.04.15