名词
中文翻译：交替的
同义词：
['intermittent', 'alternating']
例句：
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1.They alternated between the two activities for a week.
他们一周内交替进行两项活动。
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2.The team alternates between playing on offense and defense.
该队在进攻和防守之间轮换。
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3.The schedule alternates between lectures and group discussions.
日程表交替安排讲座和小组讨论。