表达式: representation; expression类型: type; mold; form; cut类型表达式: type expression表达式的类型: type of expression表达式数据类型: expression data type混合类型表达式: mixed mode expression缺有序类型表达式: error 39 ordinal expression expected表达式的类型必须为: type of expression must be boolean; type of expression must be integer表达式的类型必须为boolean型: type of expression must be boolean表达式的类型必须为integer型: type of expression must be integer混合类型表达式生成代码: generating code for mixed expression表达式: representation; expression◇表达式求值 evaluation of expression显式类型: explicit type形式类型: formal category隐式类型: implicit type组合式类型: composite type工作方式类型: duty-type缺省隐式类型: default implicit type显式类型结合: explicit type association显式类型转换: explicit type conversion隐式类型结合: implicit type association隐式类型语句: implicit type statement隐式类型转换: implicit type conversionlambda表达式: lambda expressionlisp 表达式: lisp expressions