Signs of deficiency can be exhaustion, anaemia, pins and needles in hands and feet, depression and irritability.

不足的迹象，可以用尽，贫血，别针和针头在手和脚，抑郁和烦躁不安。

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Signs of deficiency can be exhaustion, anaemia, pins and needles in hands and feet, depression and irritability.

不足的迹象，可以用尽，贫血，别针和针头在手和脚，抑郁和烦躁不安。

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