difference string的意思|示意

If one of them is missing, I'll suppress printing its name as well, so I can tell the difference between it being absent and being set to an empty string.

如果其中某个不存在，那么我还是不打印它的名称为好，这样我可以区别出是没有这个属性还是它被设置成了空字符串。

The difference here is that the format string must identify, with each format specification, which dictionary entry will be used to provide the substitution.

这里的差异是，格式字符串必须为每个格式定义指定使用哪个词典条目提供替换。

The main difference is that a HashMap is instantiated that associates a String value to a String key.

主要差别是，实例化了一个HashMap，用于将一个string值与一个string键相关联。