double vision

例句：

1. 1. She had double vision when she was pregnant.
   她怀孕时有双重视觉。
2. 2.The patient had double vision due to a brain injury.
   由于脑损伤，病人有双重视觉。
3. 3.He was unable to focus on the screen because of his double vision.
   他因为双重视觉而无法聚焦在屏幕上。