他有一种自信的风度，令人肃然起敬。

He has a ___self ___assured manner that commands respect.

她自信满满的陈述说服了房间里的每一个人。

Her ___self ___assured presentation convinced everyone in the room.

尽管问题充满挑战，这位首席执行官依然泰然自若。

Despite the challenging questions, the CEO remained completely ___self ___assured.