Ultraviolet rays are invisible to humans though ants and honeybees are sensitive to them.
Ultraviolet rays are invisible to humans though ants and honeybees are sensitive to them.
人是看不到紫外线的，尽管蚂蚁和蜜蜂可以感觉到。
Ultraviolet rays are invisible to humans though ants and honeybees are sensitive to them.
人是看不到紫外线的，尽管蚂蚁和蜜蜂可以感觉到。