◎ 理所当然 lǐsuǒdāngrán[justifiably; a matter of course; as it ought to be; be both natural and right; it goes without saying; it is what propriety requires] 按道理应该如此 就把来结识了这位大哥,也是理所当然。——明· 冯梦龙《醒世恒言》-----------------国语辞典:以理而言应当如此。《朱子语类.卷六○.孟子.尽心上》:「只是理所当然者便是性,只是人合当如此做底便是性。」《醒世恒言.卷一六.陆五汉硬留合色鞋》:「就把来结识了这位大哥,也是理所当然。」也作「理固当然」。近天经地义,理当如此反岂有此理
◎ 理科 lǐkē[science department in a college] 教学上对物理、化学、数学、生物等学科的总称-----------------国语辞典:数学、物理、化学、生物等学科的统称。相对于文科而言。英语 the sciences (as opposed to the humanities 文科[wen2 ke1])德语 Naturwissenschaft (S)法语 faculté de science, sciences naturelles