这列火车带他横跨国家，走了一千英里，来到一个完全陌生的城市。
That train took him a thousand miles across the country to a totally strange city.
因为他对这城市完全陌生，我希望你能给他必要的协助。
Because he is totally unfamiliar with the city, I hope you can give him necessary help.
他对这城市完全陌生，所以我希望你能给他必要的帮助。
As he is a perfect stranger in the city, I hope you will give him the necessary help.
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