bark of elm tree [經(jīng)濟學]榆白皮bark of chinese catalpa [經(jīng)濟學]梓白皮bark mark 邊號bark hausen jumps [材料科學]巴好生跳躍bark gauge [機械工程]樹皮厚度計bark for fuel [農(nóng)業(yè)科學]燃料樹皮bark dust bark crusher [材料科學]樹皮壓碎機bark coppice [農(nóng)業(yè)科學]剝皮林bark cloth 樹皮布bark chinese catalpa [醫(yī)藥科學]鋅白皮bark brown [經(jīng)濟學]老樹皮色bark breaker [經(jīng)濟學]樹皮碎裂機bark box [經(jīng)濟學]樹皮盒bark borer 蛀皮蟲bark beetles 小蠹蟲bark beetle attractant [化學]小蠹蟲引誘劑bark beetle 樹皮甲蟲bark at the moon 吠月；徒勞無功bark at 狗朝著（對著）某人叫；對…狗吠