solve_difficult_social_problems

1.Their stories must be told if we want to solve difficult social problems and help those who suffer from them.
如果我们想要解决艰难的社会问题和帮助那些遭受痛苦的人，他们的故事必须被人了解。
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2.Their stories must be told if we want to solve difficult social problems and help those who suffer from them.
我们要想解决社会难题并帮助那些为难题所困的人们，就必须把他们的情况说出来。
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3.For example, reduced vehicle use could solve traffic problems and a host of social and environmental problems, but evidence from around the world suggests that it is very difficult to make people give up their cars to any significant extent.
例如，减少汽车的使用可以解决交通问题以及许多社会和环境问题，但来自世界各地的证据表明，要让绝大多数人放弃汽车是非常困难的。
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