Democritus
/dɪˈmɒkrɪtəs/- (c.460-c.370 BC) , Greek philosopher. He developed the atomic theory originated by his teacher, Leucippus, which explained natural phenomena in terms of the arrangement and rearrangement of atoms moving in a void.德谟克利特（约公元前460-约前370, 希腊哲学家, 发展了老师留基伯的原子学说, 以在空间运动的原子组成和重组来解释自然现象）。