空气污染是每个人都非常关心的话题。
The subject of air pollution is very near to everyone's heart.
他们关注的是人们最关心的话题和事情。
They focus on topics and matters that are close to people's hearts.
这是一个我非常关心的话题。作为一名英语老师，这是我最可怕的噩梦。
It is a subject that's near and dear to my heart. Being an English teacher, it is my worst nightmare.
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