This is a beautiful, new device that gives you detailed sleep tracking data, not just whether you're asleep or awake, but also your phase of sleep -- deep sleep, light sleep, REM sleep.
这是个漂亮的新仪器 它记录你的详细睡眠数据 不仅仅是你是睡是醒，而是你睡眠的阶段-- 深度睡眠，浅度睡眠，极深度睡眠。