如果历史往往重复发生，我们能否至少吸取以往的教训并避免重复犯错？

If history tends to repeat itself, can we not at least learn from the past and avoid repeating mistakes?

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这些吻可以被重复发送、当作电话留言甚或转发给其它人。

Kisses can be repeated, left as a message and even relayed to other people.

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研究要求试验参与者重复发出“哦”、“啊”、“嗯”和“咦”四种声音。

The subjects were asked to make four repeated sounds –“oo”, “ah”, “eh”, and “ee”.

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