英汉词典

1. 护照
    Your passport is an official document containing your name, photograph, and personal details, which you need to show when you enter or leave a country.

    e.g. You should take your passport with you when changing money.
           兑换货币时应该带着护照。
    e.g. ...a South African businessman travelling on a British passport.
           持英国护照旅行的南非商人

2. 进身之阶；（获取成功或幸福的）途径，手段
    If you say that a thing is a passport to success or happiness, you mean that this thing makes success or happiness possible.

    e.g. Victory would give him a passport to the riches he craves...
           胜利将使他有机会获得自己梦寐以求的财富。
    e.g. If the interview goes well it could be the passport to an exciting new career.
           面试顺利的话，将获得令人兴奋的新工作。