At the moment, nobody knows if SIDS babies die of brachycardia or hypothermia or both.

当前，还没有人知道SIDS的婴儿是因心跳徐缓或体温降低或两者都是。

youdao

What they found was that before the manipulated mice died , they suffered from brachycardia ( abnormally slow heart rate) and hypothermia .

他们发现在实验用的白鼠死亡之前，它们会出现心动徐缓（心率异常缓慢）和失温的症状。

youdao

At the moment, nobody knows if SIDS babies die of brachycardia or hypothermia or both.

ECONOMIST: Sudden infant death syndrome

What they found was that before the manipulated mice died, they suffered from brachycardia (abnormally slow heart rate) and hypothermia.

ECONOMIST: Sudden infant death syndrome