然而继承也容易降低程序可读性。
On the other hand, inheritance can make programs difficult to read.
这种方法编程复杂、编程时间长，程序可读性和可调试性较差，且对编程人员要求较高。
It is complicated and needs long time to program by this method, and the programme has bad readability and adjustive capability, and there is high need for the programmer.
注意清单3中扩展到多个行的程序语句是如何缩进以改善可读性的。
Notice how the program statements in Listing 3 that extend over more than one line are indented to improve readability.
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