When your blood sugar gets too low, you feel tired, lethargic and a little crabby.

当血糖太低，你会感到疲倦、昏睡还伴有一点儿暴躁。

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When he gets up in the morning, he's usually a crab (or in a crabby mood).

他早上起床时，总是很烦躁。

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When he gets up in the morning, he's usually a crab (or in a crabby mood).

他早上起床时，总是很烦躁。

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