名词
中文翻译：Unknown
同义词：
['intermittent', 'alternating']
例句：
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1.The team alternates between playing offense and defense.
队伍交替进行进攻和防守。
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2. They alternated between the two jobs for a year.
他们一年中交替做这两份工作。
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3.The students alternated in the classroom seating.
学生们在教室座位上交替坐。