None required students to pass an eighth-grade test before going to high school.
没有一个州要求学生在上高中之前必须通过八年级的考试。
The idea behind it is "M-theory," which, he says, allows there to be many universes that were created out of nothing, none of which required the intervention of God.
这个思想的背后即是“M理论”,他说,这个理论支持多个宇宙在虚无中诞生出来,没有一个需要上帝的旨意。
If one of the required values is None, this means that one of the command line option was not specified.
如果必需的值之一是None,就意味着没有指定一个命令行选项。
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