oxygen levels
血氧水平
真题改编里的原句
Not necessarily. Many drivers keep working once treatment starts. The first step is a sleep study, which measures your breathing and oxygen levels overnight.
不一定。许多司机在开始治疗后仍能继续工作。第一步是做睡眠监测，它会在夜间测量您的呼吸和血氧水平。
出自《睡眠门诊 — 睡眠监测转诊》练到这个词的真题改编
共出现在 1 篇真题改编里。