maintainer例句：

　　Clinical application of positive pressure transparent space maintainer

　　壓膜式間隙保持器的臨床應用

　　We are a maintainer and builder of the international system.

　　我們是國際社會(huì )秩序的維護者和建設者。

　　Male sterile line and maintainer line of S~ v type wheat

　　S~v型小麥雄性不育系及保持系的研究

　　A study on Breeding Corn Genetic Male Sterile Double Heterozygous Maintainer

　　玉米基因雄性不育雙雜合保持系的選育研究

　　You are the cause and the maintainer of the three worlds.

　　你是三個(gè)世界的原因和維系者。