The factors method might seem like a random collection of symbols.
factors方法可能看上去像一个随机符号集。
The least hackable password, then, would be a long string of completely random letters, numbers, spaces and symbols – but you'd never remember it.
那么最不容易被破解的密码，将是由完全随机的字母、数字、空格和符号组成的一串很长的字符- 但你永远记不住它。
In a second test, participants were shown two symbols at random and asked to say which was the larger of the two.
接下来的试验中，实验人员随即选出两个符号问他们哪个更大。
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