设备也可识别和拦截到达非标准或非指定的端口。
The appliance also can identify and block threats that arrive on non-standard and non-assigned ports.
包括一个“以上都不是”的选项，或投票者自己填写非指定的答案。
Include an option of "none of the above" or write-in answers.
“一个苹果”所指示的是一个非指定的苹果。它可以是任何的苹果。
"An apple" refers to a nonspecific apple. It could be any apple.
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