eyestrain
n. 视疲劳，眼睛疲劳
例句
Eyestrain also results from reading a lot, reading in bed, and watching too much television.
过度阅读、躺在床上看书和看太多电视也会导致眼疲劳。
However, although eyestrain may cause some pain or headaches, it does not permanently damage eyesight.
然而，尽管眼疲劳可能会引起一些部位的疼痛或头痛，但它不会永久性地损害视力。
Is it because of eyestrain?
是因为用眼疲劳吗？
