詞語：facultative
facultative的反義詞
a. obligate
facultative的解釋
facultative['fækəltətiv]adj. 授權的，特許的
facultative的意思
facultative 兼生性;兼性;兼性因素;兼性的;facultative heterochromatin 兼性異染色質;異染色質;facultative saprophyte 兼性腐生菌;兼腐生物（兼性寄生物）;兼性死物寄生菌;或兼性腐生物;facultative insurance 臨時保險;臨時保險。;facultative bacteria 兼性細菌;兼性細菌，適應性細菌;二兼性細菌;
facultative的參考例句
1.Are the conflict rules facultative or mandatory for the judge and the person concerned? 衝突法對法官和當事人是任意性規範還是具有強制性的拘束力？
2.There are two modes in the preceding process, which are facultative biochemical mode and biologic enhanced flocculation mode. 前處理單元在兩個模式，即兼性生化模式與生物強化絮凝模式之間轉換。
3.A facultative anaerobic bacillus strain ××—01 was isolated and selected from the cattle stomach which can produce exocellular cellulase. 從牛胃中分離篩選出一株兼性厭氧芽孢桿菌××—01，可產生分解纖維素的胞外酶。
facultative的詞匯及翻譯
facultative anaerobic parasite - 兼性厭氧性寄生蟲
facultative anaerobe - 兼性厭氧菌
facultative parasite - 兼性寄生蟲
facultative sterility - 避孕性不育