动词短语
中文翻译：把自己定位为
同义词：
['become', 'take on the role of', 'assume the mantle of']
例句：
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1. He set himself up as a leader in his community.
他把自己定位为社区的领导者。
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2. She took on the role of a teacher for the first time.
她第一次扮演了教师的角色。
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3. The new president was expected to assume the mantle of leadership.
新任总统被期望承担领导责任。