词汇	九乾
释义	九乾 jiǔ qián九天。高远的天空。九干
随便看	horizontal boiler horizontal bomb horizontal bombing Horizontal Bone horizontal boom horizontal bop horizontal borehole horizontal borehole pressure recorder horizontal borehole profile horizontal borer horizontal boring horizontal boring and drilling machine horizontal boring and milling machine horizontal-boring and milling machine horizontal boring and turning mill horizontal boring machine horizontal-boring machine horizontal bottom furnace horizontal boundary horizontal bow horizontal bowl horizontal box furnace horizontal brace horizontal braces horizontal bracing