'traverse' 目录是什么意思？

What does it mean to 'traverse' a directory?

'traverse' 目录是什么意思，例如在 chmod 权限的描述中？

r = read
w = write
x = execute (traverse for directories)

意思是要访问一个目录的内容（遍历目录）需要有该目录的执行权限