Definition: the state of being blind Level: C1
如果得不到治疗，这种疾病可能导致永久性失明。
The disease can lead to permanent ___blindness if left untreated.
除了失明，他还面临着其他的健康挑战。
Apart from his ___blindness, he faces other health challenges.
这部纪录片探讨了突然失明所带来的情感冲击。
The documentary explored the emotional impact of sudden ___blindness.
