People have made efforts to change Chinese characters over the centuries.

几个世纪以来，人们一直在努力改变汉字。

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Inertia is the resistance of objects to efforts to change their state of motion.

惯性是物体对改变其运动状态的力的阻碍。

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Natural simply means impervious to central bankers' efforts to change it, however much money they print.

“自然的”仅仅表明中央银行家企图改变它的一切努力都是徒劳，哪怕印再多的钞票也都无济于事。

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But if it fails, it will underscore the limits the international community faces in its efforts to change the future of Afghanistan.

VOA: standard.2010.05.28

They also announced plans to cooperate in efforts to fight climate change and develop clean forms of energy.

VOA: special.2009.04.18

That was the movie about former vice president Al Gore and his efforts to fight climate change.

VOA: special.2009.08.07

Many Democrats back IPAB repeal but oppose Republican efforts to change medical malpractice laws.

FORBES: The Final Push for IPAB Repeal

Employment rules and trade-union pressure frustrate efforts to change working practices or cut costs.

WSJ: What Will New World Order Look Like?

Stung by what they see as unfair competition, bricks-and-mortar retailers are supporting efforts to change the law.

WSJ: Get Ready For the Online Sales Tax