常见例句雙語例句It is constructed out of metal plates and rods, arranged helically around a retort stand, and shows one complete turn of the famous double helix.它由一些金屬板和金屬棒搆架而成，螺鏇形的圍裹在一個蒸餾架上，展示了那個知名的完整雙螺鏇鏇轉。每個金屬片代表四個堿基之一。 返回 retort stand