aflojar
Las vibraciones de la bomba agravaban este problema, haciendo que las conexiones se aflojasen (o que retrocediesen) de los puertos en condiciones de funcionamiento normal.  | Vibrations from the pump aggravated this problem, causing fittings to unscrew from (or back themselves out of) the ports under normal operation.  | 
Cuando solicitó al personal de hospital que le aflojasen las ataduras, estos se negaron.  | When he asked the hospital staff to loosen the cuffs, they refused.  | 
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