Of course, strong passwords can be difficult to remember, and the strain only worsens as you collect and memorize yet another eight-character key (of, say, numbers, punctuation, and mixed case).

当然，强密码可能难以记住，并且当您需要收集和记住另一个 8 字符的密钥（数字、标点符号及其组合）时，情况变得更复杂。

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Then use numbers, symbols and mixed-case letters to recreate it: “2bon2bT1tq” is a password with quadrillions of variations.

然后用数字、符号和混合大小写来重新编排一下：“2bon2bT1tq”（用“2”代替“to”），这样这就成了一个有万亿次变化可能性的密码。

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Requiring that passwords include Numbers, symbols, and mixed cases significantly increases the number of possible passwords.

要求密码中包含数字、字符、混合大小写显著增加了密码的可能数量。

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Afterward, when faced with distraction, the volunteers proved better at completing tasks involving looking for target numbers mixed into a series of distracting letters that quickly flashed on a screen.

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Callers backing Peter Brame ended up wrongly voting for his rival Carolynne Good when their phone-in numbers became mixed up on screen.

BBC: NEWS | Entertainment | Academy vote mix-up played down

Yet the picture is more mixed than these negative numbers might suggest.

ECONOMIST: Still on amber