Variant variable type (contains all types, specified by definition). If a key word is not specified, variables are automatically defined as Variant Type, unless a statement from DefBool to DefVar is used.
变体变量类型（含有所有类型，由定义指定）。如果未指定关键字，也未使用从 DefBool 到 DefVar 的语句，变量将自动定义为变体类型。