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Use bifocal or varifocal lenses may relieve asthenopia.是什么意思？

Use bifocal or varifocal lenses may relieve asthenopia.

如改用双焦点或渐进多焦点镜片可能有助于减轻视疲劳.

相关词汇
use bifocal or lenses May relieve asthenopia

use

n. 使用，使用权，功能；

bifocal

adj. （指眼镜片）双焦的，双光的，有二重观点的；n. 双重焦点透镜，双光眼镜；

or

conj. 或，或者，还是，不然，否则，左右；prep. <古、诗>在…之前，比…更早；n. [纹章]黑金色、黑色；

lenses

n. 透镜，镜头( lens的名词复数 )，眼睛中的水晶体；

May

aux. 可以，也许，会，但愿；n. [May]五月，山楂属植物，（五朔节装饰用的）绿枝花枝，（春天开花的）绣线菊属植物；

relieve

vt. 解除，缓解，换班，（去厕所的一种委婉说法）方便；

asthenopia

n. 视疲劳，眼疲劳；
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