乙炔...

十二指肠扩张...

He is a hard worker and a skilled gardener.他工作很努力，对园艺很在行。He reckons she's having it off with the gardener.他认为她和园丁有一腿。Mr Dawe was the ancient, formally trained head gardener.道先生是那种老式的、正规科班出身的首席园艺师。...

苄叉丙酮...

腺异位...

橙皮烯...

adj.苯亚甲基的，苄叉...