hollowlyadv.凹陷地;空心地;不诚实地
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 back roll挂臂挺身回环
hollow propeller空推动泵
Hollow wrap core空心套芯
hollow pipe pile空心管桩
hollow stay bolt空心螺栓
hollow waveguide中空波导管
hollow die shell空腹模壳
hollow thin pier空心薄壁墩