单词	偶然宿主
释义	偶然宿主host，occasional
随便看	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 backward extruding die backward extrusion backward-facing backward-facing seat