to travel incognito 旅行时隐匿身分
to travel southwards 向南旅行
to travel by rail 乘火车旅行
to travel by night 在夜间旅行
To travel the world 敖游天下
to travel long distance 作长途旅行
A ship that sailed from New York to San Francisco had to travel around the bottom of South America.
VOA: special.2009.12.23
Notice that these transport costs go up in the distance you have to travel and they go up pretty fast.
注意这些交通成本,随着距离而增长并且增长得很快
And I thought it's close enough to go, close enough to travel to other parts of Europe,
我还认为这里去欧洲其他地方旅游会很近,
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