Altair is not as bright as Vega and Deneb.牛郎星不如织女星和天津四明亮.While more 3 stars, called the Altair.一边多了三颗星, 叫做牛郎星.Altair is as bright as Vega and Deneb.牵牛星与织女和天津四相比,光亮度还是略为逊色....
Simmer until mixture reduces.用小火煮到汤汁收浓。It reduces the risks of heart disease.这降低了患心脏病的风险。Our chemistry teacher often reduces a compound to its components in lab.在实验室中化学老师常把化合物分解为各种成分....