相關(guān)單詞近義詞 clear 清楚的, mathematical 數(shù)學(xué)的, distinct 明顯的, sharp 鋒利的, definite 明確的, precise 精確的, exact 精密嚴(yán)謹(jǐn)?shù)? chiseled 鑿過的反義詞ill-defined, 不清楚的臨近詞well, Welliver 返回 well-defined