natural enemy
【纺织；造纸】蚕丝（纯丝绸、真丝）、丝细丝
natural silk (pure silk, real silk), silk filament
暂无补充释义。
相关词条
natural guardian
natural reproduction
natural representative
damped natural frequency【物】
liquefaction of natural gas【油气】;natural gas liquefaction【油气】
natural language explanation
natural asphalt