他戴眼镜是因为他的视力不好。

He wears glasses because his sight is poor.

因为她视力不好。

Because she had weak sight.

在我看来，经常用手机看书是视力不好的原因。

In my opinion reading on mobile phones too often is the cause of having poor eyesight.

如果你的视力不好，你就不应该开车。

If your sight is poor, you should not drive a car.

他的视力不好，什么也看不清。

His eyesight was so poor that he couldn''t see anything clearly.

他的视力不好，什么也看不清。

His eyesight was so poor that he couldnt see anything clearly.

视力不好对学生来说是一个障碍。

Eyesight is a handicap to a student.

因为读了太多的书，她视力不好。

She has poor eyesight reading books.

她视力不好。

She has poor sight .

他左眼视力不好。

He sees poorly with his left eye.