perfect self-assurance的用法和樣例：
例句
- Public speaking boosts your self -confidence and promotes your leadership skills.
在公共場(chǎng)合講話(huà)可以增強你的自信和提高你的領(lǐng)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。
