To take an extreme example, farmlands dominated by a single crop are so unstable that one year of bad weather or the invasion of a single pest can destroy the entire crop.

举个极端的例子，以单一作物为主的农田是如此不稳定，一年的坏天气或单一害虫的入侵可以摧毁整个作物。

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The Solution: While I agree that you shouldn’t be a miserly Scrooge and save every penny because it physically hurts you to spend it, going the other extreme is just as bad.

策略：我同意说你不该是个吝啬的守财奴，存下每一分钱，一花钱你就觉得受到伤害，但是走向另一个极端也是不好的。

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Fat women try to lose weight through fasting or extreme diets, which are bad for the baby.

脂肪妇女尝试通过禁食或极端的饮食来减肥，这这样做对婴儿不利。

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"The fact that the central banks have had to take such extreme measures underlines how bad market conditions have become, " said Mr Jessop.

BBC: US warns of further bank failures