词汇	一门外语
释义	一门外语 a foreign language门
随便看	backward attribute backward backwash backward Bakasy tracing backward Bekesy tracing curve backward-bending curves Backward bending labor supply curve backward bending supply curve backward bend vane backward bent vane backward bias backward-bias Backward Bisimulation backward-bladed aerodynamic fan backwardbladed impeller backward bladed impeller backward-bladed impeller backward block backward boost backward bound backward boys backward branc backward branch backward branching Backward branch of diffraction curve backward brush lead