boundadj.必定的；有义务的；受约束的；装订的vi.跳；跳跃前进；猛涨n.跳跃；范围；界限动词bind的过去式和过去分词形式bound method界限法bound ligand结合配体bounded test界限检验bounded rule限制bound barrel束紧的枪管bound charge束缚电荷bound stroke跳一次后击球bound niacin结合烟酸bound ration有限理性bound vortex束缚涡,约束涡,束缚涡流