有许多不同类型的认证机制，而每一种类型都难以尽善尽美。
There are many diverse types of authentication mechanism, and each is difficult to get right.
而“尽善尽美者”总想着做出最好的决定，就算他们看到一辆合乎自己要求的自行车，他们也不会做出决定——直到他们把所有的备选自行车都研究过一遍后。
Maximizers want to make the best possible decision; even if they see a bicycle that meets their requirements, they can't make a decision until they've examined every option.
从咨询，送货，到售后服务，每个过程都致力于做到尽善尽美，超出客户的要求。
From consulting, delivery, after-sales service, each process are committed to be perfect, beyond the customer's request.
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