解释：斩草要除根，不要与祸乱沾边，就不会有祸。

Science is not just about discovering new things, but also about improving the quality of life for people around the world.

I don't sing for entertainment. I sing for the woman who has been through hell and back.

The development of MRI has revolutionized the field of medical imaging, allowing us to see inside the human body in ways that were previously unimaginable.

随机评估可以帮助我们了解发展中哪些措施有效，哪些无效。