名词
中文翻译：Unknown
同义词：
['cool', 'cool-headed', 'crazy', 'mad', 'nuts']
例句：
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1. She's always Yippie about fashion.
她总是对时尚很酷。
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2. He's a crazy Yippie who loves to dance.
他是个疯狂的Yippie，喜欢跳舞。
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3. The Yippie movement was all the rage back in the day.
Yippie运动是当年的潮流。