hollows圆角面hollowadj.空的；空洞的；凹陷的；虚伪的；(声音)沉闷的n.山谷；洞；窟窿vt.挖空vi.形成空洞adv.完全地；彻底hollow organ中空器官hollow shell空心管坯hollow shelf空心隔板hollow fusee空心均力圆锥轮hollow fibre中空纤维hollow bloom空心管坯hollow globe空心球状hollow yarnl空心纱hollow guide空腔波导管hollow spoke空心轮辐