词汇	volunteer your service
释义	volunteer your service vi.自愿服务
随便看	horizontal-shaft current metre horizontal-shaft disk crusher horizontal-shaft double turbine horizontal shaft generator horizontal shaft mixer horizontal-shaft mixer horizontal shaft turbine horizontal shaft type horizontal shaft water turbine horizontal shaft water-turbine horizontal-shaft water turbine horizontal shaking table experiment horizontal shallow blast hole horizontal shaper horizontal shaping machine horizontal shear horizontal shearing horizontal shearing stress horizontal shear machine horizontal shear strength horizontal shear stress horizontal shear test horizontal shear wave horizontal sheeting horizontal sheeting for excavation