twinter缠绕twinadj.孪生的；紧密联系的n.双胞胎之一Twin-tube tunnel双连拱隧道twin-lens camera双镜头照相机twin-lens reflex双镜头反光照相机twin-valve filter双阀滤池twin-action brake双作动式制动器twin-tandem wheel双串式轮twin roll-casting双辊铸轧twin discharge tube孪生放电管twin-ovary mutant双子房突变体twin-fish ashtray双鱼烟缸