短语词组短语Bast -fiber 韧皮纤维bast -fiber crops 麻类作物bast fiber crop [作物]麻类作物cotton bast fiber 棉秆皮纤维bast fiber film mulching 麻地膜覆盖bast fiber textiles 麻纺织品bast fiber textile 麻纺织业 返回 bast fiber