因为其他人要查看此文件的话就要重新定义制表字符或代码才能符合你的方式，这并不好。
This is bad because it requires everybody who views this file to redefine their tab character or the code does not appear the way you intended it to look.
youdao
垂直列表字符，竖向制表?。
VT?Vertical Tabulation character?
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