left-to-right shunt ratio是什么意思，left-to-right shunt ratio的翻译，left-to-right shunt ratio音标、读音、用法和例句_开心英文字典

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left-to-right shunt ratio是什么意思，left-to-right shunt ratio的翻译，left-to-right shunt ratio音标、读音、用法和例句_开心英文字典_柠咚词