Public speaking boosts your self -confidence and promotes your leadership skills. 在公共場合講話可以增強你的自信和提高你的領導能力。
In pointed contrast to this intellectual assurance, the emotional side of her education is touchingly uncertain and halting. 與她知識分子的自信一面恰恰相反,她對自己的情感卻是難以確定,左右為難。