I tried to lead the discussion back to the main issue.

　　我試圖把討論引回到主要問題上。

　　She has tried to lead a good life.

　　她努力規規矩矩地生活。

　　He should be able to lead a perfectly normal life.

　　他應該能夠過上完全正常的生活。

　　Social and political problems led to the outbreak of war.

　　社會和政治問題導致了戰爭的爆發。

　　Eating too much sugar can lead to health problems.

　　食用過多的糖會引起健康問題。