During sleep the automatic metabolic system is less responsive to carbon dioxide levels and oxygen levels in the blood.

在睡眠期间，自动的新陈代谢系统对血液中二氧化碳和氧气的含量反应并不灵敏。

youdao

youdao

The first is an automatic, metabolic system whose control is centered in the brain stem.

第一种是自发的新陈代谢系统，它的控制集中在脑干上。

youdao

The federal law enforcement official told CNN that such a hit in the system doesn't prompt automatic action.

CNN: Bombing suspect not on terror watch list

Grid Friendly Appliance Controller: Developed at the Pacific Northwest energy Laboratory, the Grid Friendly Appliance controller senses grid conditions by monitoring the frequency of the system and provides automatic demand response in times of disruption.

FORBES: You Could Be the Next 'American (Geek) Idol'

The ship's automatic fire extinguishing system kicked in and soon contained the blaze, and no injuries were reported.

CNN: STORY HIGHLIGHTS