疲劳

The eyes strain easily if you read in poor light. / Reading in semi-darkness tires the eyes easily.

She is easily tired. / She fatigues easily.

be mentally and physically exhausted; be weary in body and mind

be excessively fatigued

feel fatigued

Noise hastens fatigue.

combat/battle fatigue

eyestrain

auditory fatigue

nervous strain; mental fatigue

physical strain; bodily/physical fatigue

brain/intellectual fatigue

mental fatigue/strain

muscular fatigue

banish/break/dissipate/relieve fatigue

lessen fatigue

relieve one's fatigue

elastic fatigue

metal fatigue

mechanism fatigue

photoelectric fatigue

magnetic fatigue

fatigue strength