例句 /

A thirty year old listener in Vietnam says he can not see well and doctors have told him he has retina (retinal) degeneration .

A thirty year old listener in Vietnam says he can not see well and doctors have told him he has retina (retinal) degeneration .

越南一位三十岁的听众说他看东西很模糊,医生说他已经得了视网膜坏死症。