“任何时候中国都不能缺少制造业”
美國、澳洲也可以自訂車牌號碼，昆士蘭政府更容許車主在車牌加上emoji表情符號。台灣則未開放自由選號的自訂車牌政策，但車主可以競標公路總局推出的熱門號牌。
，详情可参考PDF资料
One analogy I’ve seen for simple anonymous credentials is to think of them like a digital version of a “wristband”, the kind you might receive at the door of a club. In that situation, you show your ID to the person at the door, who then gives you an unlabeled wristband that indicates “this person is old enough to buy alcohol” or something along these lines. Although the doorperson sees your full ID, the bartender knows you only as the owner of a wristband. In principle your bar order (and your love of spam-based drinks) is untied somewhat from your name and address.
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the complexity side of things is harder to explain. you can approach this theoretically, practically, or a mix of both. the theoretical approach is to look at the worst-case time complexity of each algorithm, and the practical approach is to look at how they perform on real-world inputs and benchmarks. let’s explore a bit of both.