动词短语
中文翻译：将帽子扔进圈里
同义词：
["to throw one's hat into the ring", 'to enter the fray', 'to take a shot at']
例句：
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1. He threw his hat into the ring and challenged the champion.
他投入竞争并挑战了冠军。
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2. She entered the fray by volunteering for a local charity event.
她通过志愿参加当地的慈善活动而投入竞争。
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3. To take a shot at success, you must be willing to put in the hard work required.
要成功，你必须愿意付出所需的努力。