Steven:He's always a know-it-all.

他总是一个万事通。

Grace is always correcting other people. She thinks she's a know-it-all.

格雷斯总是在纠正别人，她觉得自己是万事通。

Today, new employees arrive on their first day with an alarming amount of know-it-all.

今天，新员工上班第一天就已经无所不知得叫人惊恐了。

If you can master this simple tool, you'll be the most insufferable know-it-all in your crew.

如果你能掌握这个简单的工具，你会变成那个让人“不堪忍受”的万事通。

"You never want to come across as a know-it-all, no matter what age you are," notes Finkelstein.

芬克尔斯坦表示，“无论年龄多大，永远不要以一副百事通的形象示人。”