动词短语
中文翻译：Unknown
同义词：
['set the line', 'draw the line', 'establish the boundary']
例句：
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3. 准备
行动
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1.The captain laid down the line at the start of the game.
队长在比赛开始时划定了界线。
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2. They laid down the line on the issue of immigration.
他们在移民问题上划定了界线。
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3. He laid down the line on his political views.
他在政治观点上划定了界线。