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In addition , trim fingernails and keep them clean to help lessen the effects of scratching , including broken blisters and infection .

除此之外，修剪整齐他们的指甲，并保持指甲干净会帮助减弱抓带来的效果，包括抓破水泡及感染。

Scratching and self-grooming are well known to be related to anxiety .

挠自己和为自己梳理毛发是广为人知的焦虑表现。

You may end up scratching them .

这样你可能会擦刮除掉这些颗粒。

Recommended to avoid local irritation and excessive scratching .

建议避免局部刺激及过度搔抓。

Such responses leave many in other developed democracies scratching their heads , asking the same question : what is it with america and guns ?

这种反应让许多在其他发达的民主国家挠头，问出同样的问题：美国和枪支到底是什么关系？