一氧化碳的血流饱和量达到10%至20%时，观测到的感觉变化只是额部两边紧张和轻微的头疼。

With a blood saturation of 10% to 20% carbon monoxide, a tightness across the forehead and a slight headache are the only sensory changes observed.

youdao

中国五月份出口增长额放缓，预示着其主要市场可能已达到饱和。

The pace of growth of China's exports slowed down in May suggesting that demand in its key markets may be faltering.

youdao