So that is where we're calculating the age, and right below that you can see the type of error. In this case, we have a type error, and here's the message. Unsupported operand types for subtraction. Int and str.

是我们计算年龄的地方，在下面你可以看到错误的类型。在种情下，我们有一个类型错误，里是信息。不支持的数类型减法。 Int和str。

Opcodes were given simple names, called mnemonics, which were followed by operands, to form instructions.

码被赋予了简单的名称，称为助记符，后面跟着数，从而形成指令。