confidently

The young pianist walked onto the stage and played the complex piece confidently.

(Chinese) 年轻的钢琴家走上舞台，自信地演奏了那首复杂的曲子。

If you speak confidently during the interview, you are more likely to get the job.

(Chinese) 如果你在面试时说话自信，你更有可能得到这份工作。