释义
- 1. lit. to penetrate into a bull's horn (idiom); fig. to waste time on an insoluble or insignificant problem
- 2. to bash one's head against a brick wall
- 3. a wild goose chase
- 4. a blind alley
- 5. to split hairs
流利来自习惯。
改变你的学习方式。
试试 HanyuGuide 的主动间隔重复系统。
