laitimes
return

Day does not understand the darkness of night

{"items":[]}
Previous: Light (Optical): Definitions, Units and Light Sources What Is Light? What is Light? The Electromagnetic Spectrum Electromagnetic Spectrum Know Points The Visible Spectrum Visible Spectrum Wave Fronts and Rays Wavefronts and Rays
Next: These 37 cross-border gambling criminals, Guangdong public security shouted that you immediately surrender yourself