toughie
英 [ˈtʌfi]
美 [ˈtʌfi]
n. 坚定勇敢的人; 无畏的人; 艰难的选择; 难题
BNC.44518 / COCA.43271
牛津词典
noun
- 坚定勇敢的人；无畏的人
a person who is determined and not easily frightened - 艰难的选择；难题
a very difficult choice or question
英英释义
noun
- a particularly difficult or baffling question or problem
- an aggressive and violent young criminal