Other times, a trip might involve more than one city by design: "I'm flying out to Boston to teach a class Monday through Friday."

有时候一次旅行涉及到多个城市：“我正飞往波士顿，星期一到星期五我要在那里教课。”

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During the past week the search was expanded several times, and by now more than 25 thousand square kilometers of rugged desert wilderness have been scanned by low-flying aircraft.

过去一个星期来，搜寻范围不断扩大。到目前为止，低空飞行的搜寻飞机已经覆盖了内华达州2万5千平方公里的荒山野漠。

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It hopes that flying times will increase by at least 1, 000 hours.

FORBES: Magazine Article

He observed himself becoming neurotically possessive about his little space, at times putting his life in jeopardy by flying into a rage if a guard happened to step on his bed.

NEWYORKER: Hellhole