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earn a favour or benefit by providing a service in return
通过提供服务赢得帮助或好处
the cruise lecturers are academics singing for their supper.巡迴讲师是一些以演讲获取旅费的学者。
the cruise lecturers are academics singing for their supper.
巡迴讲师是一些以演讲获取旅费的学者。