Humour is learned behaviour, Mr Rodgers says.

“幽默是后天习得的行为，”罗杰斯表示。

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While breastfeeding is a natural act, it is also a learned behaviour.

母乳喂养是一个自然行为的同时，也同样需要学习。

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Without forgetting, adaptive ability would suffer, for example, learned behaviour that might have been correct a decade ago may no longer be.

如果没有遗忘能力，那么适应能力就会受到影响。 比如说，十年前也许正确的行为现在可能已经不再是正确的了。

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Although we can't say for sure if it is this early exposure to these foods that makes the difference or whether it is learned behaviour from the feeding habits of the whole family that is important, it makes sense that fresh is best.

BBC: Parents 'need baby food cookery classes'

The report revealed that as many as 37 priests accused of inappropriate behaviour around children or sexual abuse of minors were still in active ministry even after the archdiocese learned of the allegations.

ECONOMIST: The Catholic church