tiredness

Chronic tiredness can be a significant symptom of iron deficiency in the bloodstream.

(Chinese) 长期疲劳可能是血液中缺铁的一个重要症状。

The driver's tiredness after a twelve-hour shift was the primary cause of the highway accident.

(Chinese) 司机在十二小时轮班后的疲劳是这起公路事故的主要原因。