常见例句The subsidence of Sunjiawan episode in Middle Cretaceous are further transferred eastward, and the half graban defined by the fault F 1 was formed. 中白垩世孙家湾组的沉陷进一步向东侧移，形成了以F1断层为盆缘断层的半地堑；Cyrtiospirifer sinensis(Graban) 中华弓石燕 返回 Grabans