Retractions are when you can see the ribs when your child is trying to breathe.

三凹征指的是，当你孩子试着努力呼吸时，你可以看到肋骨。

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Retractions are when you can see the ribs when your child is trying to breathe.

三凹征指的是，当你孩子试着努力呼吸时，你可以看到肋骨。

youdao