this example demonstrates the three key problematic issues
此示例演示了三个主要疑难问题
you can「t write bulletproof and error-protected code without knowing where the most problematic issues arise; that」s what this and the next few articles focus on.
不知道问题的关键在哪里,就不能编写防弹代码和错误检查代码;这正是本文以及后面几篇文章的核心。
one of the problematic issues is the situation of ground water tables in china.