Siblings and dizygotic twins share only 50 % of their segregating genes.同卵双生双胞胎和双卵双生双胞胎分享仅50%的基因.Effective segregating actions should be taken to prevent the in - advertent use AND delivery of non - conforming products.采...
牧羊人和牧羊狗把羊群赶到一块.The shepherd and his dog gathered in the sheep.牧羊狗保护羊群不受危害.The sheep dog protects the sheep from danger.就趁着林敦正注视着一只和善的牧羊狗的时候溜出去了.I slipped out, while Lindon was engaged in timidly rebuilding the advances o...