海军也能做买卖？除此之外，原翻译也严重失误！

merchant navy：（英式英语）商船，商船队；全部商船队船员

Paul is 38 years old and has been involved in the electronics industry since 1968 when he graduated and went into the merchant navy.

【翻译】保罗今年38岁，自1968年毕业后进入商船队以来，一直从事电子行业。