求翻译：对于人类来说，光和空气、水、食物一样，是不可缺少的。眼睛是人体最重要的感觉器官，人眼对光的适应能力较强，瞳孔可随环境的明暗进行调节。但如果长期在弱光下看东西，视力就会受到损伤。相反，强光可使人眼瞬时失明，重则造成永久伤害。人们必须在适宜的光环境下工作、学习和生活。是什么意思？

In humans, light and air, water, food, is indispensable. Eyes are the body's most important sensory organ, the human eye's ability to adapt to light, the pupil can be adjusted with the brightness of the environment. However, if long-term look at things in low light, vision will be damaged. In contra

For humankind, light and air, water, food, is indispensable. The most important sensory organs eyes is the human body, human eyes optical ability to adapt with the environment may be relatively strong, dilated pupils to adjust the brightness. But if we look at things in low light long-term vision, w

Regarding the humanity, the light and the air, the water, food is same, is essential.The eye is the human body most important sense organ, the human eye is strong to the light adaptiveness, the pupil may carry on the adjustment along with the environment light and shade.But if for a long time looks

For humans, light and air, water, food, are indispensable. Eye the body most important sensory organs, eyes light adaptation ability, pupils with adjusting environment of shade. But if the long-term thing when viewed in low light, the vision will be subjected to injury. Instead, the light can make i

In humans, light and air, water, food, is indispensable. Eyes are the body's most important sensory organ, the human eye's ability to adapt to light, the pupil can be adjusted with the brightness of the environment. However, if long-term look at things in low light, vision will be damaged. In contra