Doctors say that the very worst cases develop a condition called A-R-D-S, or ARDS. This is short for acute respiratory distress syndrome.

医生表示，极重病例可能会发展成急性呼吸窘迫综合征（简称ARDS）。

That's the thing with r. d. s. cases. Just when you think the baby's getting better, they can slip right back.

这就是RDS（新生儿 呼吸窘迫综合症）的表现。当你觉得她刚开始好一点，她又不行了。