adj. positive
misc. be of confidence
随着她自信心的增强，你很可能会看到她的态度有非常大的转变。
As her confidence grows you may well see a considerable turnabout in her attitude.
当下，有很多中等身材的年轻女孩倾向于通过减肥来让自己更好看，对于她们来说这样能够帮助提升自信心。
Nowadays, many young girls of medium build tend to lose weight to look more beautiful, which for them can help improve their confidence.
有，进修已经在我工作上产生了积极的效果，增强了我的自信心。
Mary: Yes, furthering my education is already bringing about positive results in my workplace as it has boosted my confidence.
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