These species do not interbreed.这些物种不能杂交.It enables scientists to transfer genes between different species that would not interbreed in nature.它使科学家之间的转移基因的不同物种,不会杂交的性质.They were rare , and the pure - strain wild turkeys...
镇上老码头区多年来疏于维护,快要塌陷了.The town's old quayside is collapsing after years of neglect.惊奇的是地板居然从未塌陷。It was a marvel that the floor never gave way.救援人员用支柱防止隧道顶塌陷。Rescuers used props to stop the roof of the tunnel collapsin...