If people knew that other motives might compromise the accuracy of their beliefs, most would probably try to be on their guard.
如果人们意识到其他的动机有可能会损害他们信念的准确性，那大部分人都会试图保持警惕。
Nothing suspicious was discerned, but still it was necessary for them to be on their guard.
他们并没有发现什么可疑的东西，但是小心戒备还是必要的。
Print Robin van Persie has warned Arsenal must be on their guard in Europe this season against all calibre of opposition after a scare in their first group match against Standard Liege.
范佩西警告说，阿森纳必须在本赛季警惕他们在欧冠赛场上碰到任何对手，他们在小组赛第一场比赛与标准列日比赛上被吓了一跳。
Print Robin van Persie has warned Arsenal must be on their guard in Europe this season against all calibre of opposition after a scare in their first group match against Standard Liege.
范佩西警告说，阿森纳必须在本赛季警惕他们在欧冠赛场上碰到任何对手，他们在小组赛第一场比赛与标准列日比赛上被吓了一跳。
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