不在公共场合打嗝或搔痒。
由这些细胞释放出的组胺导致小血管扩张，引起众所周知的症状，比如搔痒、口腔肿胀、皮疹、鼻子发痒或流鼻涕，或腹泻。
Histamine released by these cells causes small blood vessels to dilate, giving rise to the well-known symptoms such as itching and swelling in the mouth, skin rash, itchy or runny nose or diarrhoea.
不要在公共场合打嗝或乱搔痒；
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