light reaction
noun
1
- mass noun the reaction of something, especially the iris of the eye, to different intensities of light.光反应（尤指虹膜对不同光强度的反应）。
2
the light reaction
Biochemistry the reaction which occurs as the first phase of photosynthesis, in which energy in the form of light is absorbed and converted to chemical energy in the form ofATP【生化】光反应（光合作用第一阶段的反应, 此时光能转化成三磷酸腺苷形式的化学能）。