单词	上层舱--上甲板
释义	上层舱，上甲板upper deck
随便看	backward development backward development--hypoevolutism backward difference backward difference function backward difference method backward difference operator backward difference scheme backward differentiation method backward diode backward dip backward direction backward dislocation backward--dislocation backward dive backward eccentric backward elimination backward elimination procedure backward equation backward equations backward error backward error analysis backward error correction backward error recovery backward euler backward explicit congestion notification