鸟儿回到巢里继续孵卵。The birds returned to their nests and continued to incubate the eggs.雄性信天翁参与孵卵。Male albatrosses share in the incubation of eggs.她是阉过的母鸡,看见别人的孵卵是难受的.A barren hen is always jealous!...
He developed an armillary sphere, on which were carved all the astronomical phenomena known time.经过多年的观察,他研制了一架“浑天仪”.凡是知道的重要天文现象, 都刻在“浑天仪”上了.And a new type sphere - conical roller and globoid cam graduator is designed.并在...