Yes.  We used manikins.  That way, we could practice mouth-to-mouth, and chest compressions.

当然。我们用人体模型练习。样我们就可以练习口对口人工呼吸和胸外按压了。

That began to change in 1960, when the combination of mouth-to-mouth ventilation, chest compressions and external defibrillation known as cardiopulmonary resuscitation, or CPR, was formalised.

种情况在1960年开始发生变化，当时被称为心肺复苏术（简称 CPR）的口对口人工呼吸、胸部按压和体外除颤的组合被正下来。

In this scenario, we'regonna utilize the skills of hands-only CPR because we're looking at the lay rescuer or someone who is not comfortable giving mouth-to-mouth resuscitation.

在种情况下，我们会利用单手心肺复苏术的技巧，因为我们针对的是非专业救援人员或不习惯进行口对口人工呼吸的人。