一项新的研究发现，大多数三岁的孩子都能记得很多一年前发生在他们身上的事情，在他们5岁到6岁的时候，这些记忆仍然清晰，但当他们超过7岁时，这些记忆就会迅速变弱。
A new study has found that most three-year-old children can remember a lot of what happened to them a year earlier, and these memories are still clear while they are 5 and 6, but by the time they are over 7, these memories become weaker rapidly.
快乐之人会在社交，做礼拜以及读报上花上很多时间——但是一项新研究发现，这些快乐之人却不会在电视上挥霍大量时间。
Happy people spend a lot of time socializing, going to church and reading newspapers - but they don't spend a lot of time watching television, a new study finds.
细细研究，你会发现，这些新企业家们仅仅是不知道他们不清楚什么。
Looking into that you'll find that these new entrepreneurs just don't know what they don't know.
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