alternativelyadv.二者择一地；作为选择；或者alternativeadj.两者择一的；供选择的；非主流的n.二者择一；供替代的选择alternative activation替代性活化alternative allocation[计] 交替分配alternative literature另类文学alternative comparison方案比较alternativeconceptions相异构想alternative hypothesis择一假说alternative disjuction相间离开alternative optimality择一最优性alternative adaptation选择性适应Alternative splicesome选择性剪接本