例句 /

Laser therapy works best if it is performed at the first sign of eye problems, which is why regular visits to the eye doctor are so important.

Laser therapy works best if it is performed at the first sign of eye problems, which is why regular visits to the eye doctor are so important.

当首次出现视力症状时就采用激光疗法,它的功效是最好的,这就是为什么要经常去看眼科医生的重要性。