名词
中文翻译：Unknown
同义词：
['positive face', 'positive expression', 'positive attitude']
例句：
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1. She gavea warm smile to greet her guests.
她向客人露出了温暖的微笑。
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2. The teacher's stern face made the students feel nervous.
老师严肃的脸让学生们感到紧张。
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3.With a positive face, she faced the challenges head-on.
她带着积极的态度面对挑战。