假如你的头发在前后两次洗头中间这段时间又脏又油的话，养成一个更勤洗头的习惯。

If your hair is dirty and greasy between times when you wash it, make it a habit to wash it more often.

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脱发的原因很多，例如精神紧张、睡眠不足、洗头太勤，都是重要的因素。

There are many causes for hair loss: mental stress, lack of sleep and shampooing too frequently.

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