trouble：to cause inconvenience or discomfort to
V：“让某人感到痛苦或焦虑”
口语：I’m sorry to trouble you…
trouble 是一个经常被低估的、想不到词。例如当我们想表示“担心”时，可能一下子能想到 worry，concern，其实这时候也可以用 trouble。
Many students today are constantly troubled by their inability to concentrate.
People are increasingly troubled by overload of information so much so that they end up buying many online mini-courses that they do not actually need.
Many international cities, say Los Angeles, Beijing, and New Delhi, are troubled by traffic congestion.
1）翻译：What troubles the second-tier cities most is the lack of talent.
2) Perfectism has troubled him for a long time, only feeling crazy about being the best.
His reckless operation troubled both himself and his colleagues.