See well-defined for more well definedBrE /ˌwel dɪˈfaɪnd/ 🔊NAmE /ˌwel dɪˈfaɪnd/ 🔊 adjectiveeasy to see or understand 易于辨认理解的；明确的；规定得清楚的；界限分明的◆well-defined rules明确的规则◆These categories are not well defined. 这些类别划分得不太明确。🔊🔊 OPP ill-defined