Public speaking boosts your self -confidence and promotes your leadership skills. 在公共场合讲话可以增强你的自信和提高你的领导能力。
In pointed contrast to this intellectual assurance, the emotional side of her education is touchingly uncertain and halting. 与她知识分子的自信一面恰恰相反，她对自己的情感却是难以确定，左右为难。
