bear in on/upon
phrasal verb with bear verb uk/beər/ us/ber/ bore | borne or born
UK formal
认清， 认识到
If something is borne in on/upon someone, they are made to understand it.
Suddenly it was borne in on him that he was becoming too old to start a new career. 他突然意识到自己已经太老了，不适合开创新的事业。