名词
中文翻译：环游
同义词：
['circumnavigation', 'round-the-world trip']
例句：
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1.We decided to take a circumnavigation of the world during our vacation.
我们在假期决定环游世界。
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2. Thecircumnavigation ofthe globe is a daunting task.
环球航行是一项艰巨的任务。
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3. She hasbeen planning her circumnavigation foryears.
她多年来一直在计划她的环球旅行。