Any of a group of eye diseases characterized by abnormally high intraocular fluid pressure,damaged optic disk,hardening of the eyeball,and partial to complete loss of vision. 青光眼一种眼疾,症状是眼内液体压力超常的高,眼膜受损,眼球硬化,部分以至完全丧失视力。
We are in complete ignorance of his plans. 我们对他的计划一无所知。
I am at a loss respecting his whereabouts. 关于他的下落,我一无所知。