短語(yǔ)詞組短語(yǔ)back -slope e 后坡along the back hill slope 后山坡沿back slope tail bucket 反坡式尾坎back slope of powerhouse 廠房后邊坡powerhouse back slope 廠后邊坡back analysis of slope failure 滑坡反分析front -to-back slope 前后坡度 返回 back slope