动词短语
中文翻译：两人一组
同义词：
['two by two', 'pair by pair']
例句：
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1.The team practiced by twos to improve their coordination.
队伍练习成对练习以提高他们的协调性。
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2. They walked by twos to the park, enjoying the fresh air.
他们成对散步去公园，享受新鲜空气。
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3. The dancers performed by twos, creating a beautiful rhythm.
舞者成对表演，创造了美丽的节奏。