Sengupta realized the balloon-within-a-balloon structure could help him tackle the drug delivery challenge.
森古普塔马上意识到，这种气球套气球的结构也许可以帮助他解决给药的难题。
The next step is symptom-to-balloon time. If you have somebody at home waiting two hours before they call is our next challenge.
我们下一步挑战则是从症状开始到球囊扩张时间，减少那些在家等待了两个小时才打电话急救的患者。
The next step is symptom-to-balloon time. If you have somebody at home waiting two hours before they call is our next challenge.
我们下一步挑战则是从症状开始到球囊扩张时间，减少那些在家等待了两个小时才打电话急救的患者。
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