克普勒行星運動定律

Kepler

Kepler, by Walter W. Bryant“I’m sure you remember that Tycho Brahe had his own system of the universe. In a tychonic system, the earth was stationary ...

Jumper

Jumper!Let jump the character left and right and challenge your friends to see who does it better!免費玩Jumper APP玩免費免費玩Jumper AppJumper APP LOGOJumper A...