跑题（名词）

(noun) A diversion from the main topic of a speech or conversation.

EXAMPLE: The brilliant professor of physics makes lengthy digressions about unrelated topics whenever he speaks to his class, often making his lectures difficult to understand.

这位聪明的物理学教授一上课就大讲与课目无关的离题话，使得他的课经常很难懂。

气冲冲地（非正式）

(INFORMAL) In an angry manner.

EXAMPLE: After not finding what she was looking for, the frustrated young woman left the store in a huff.

由于没有找到想要找的东西，这位失落的女孩气冲冲地离开了商店。