facultative

英 ['fækəltətɪv] 美 ['fækəlˌteɪtɪv]

• adj. 能力的；偶发的；任意的；许可的；[生]兼性寄生的

英英释义

Adjective:

1. of or relating to the mental faculties

2. able to exist under more than one set of conditions;

   "a facultative parasite can exist as a parasite or a saprophyte"
   

3. granting a privilege or permission or power to do or not do something;

   "a facultative enactment"
   

4. not compulsory;

   "facultative courses in the sciences"
   

词汇搭配

• facultative denitrification 兼性反硝化作用...
• facultative thermophile 兼性嗜热菌
• facultative pond 兼性池; 兼性塘...
• facultative anaerobes [医] 兼性厌氧菌...
• facultative saprophyte 兼性腐生物,兼性腐生...
• facultative parthenogenesis 兼性单性生殖...
• facultative autotrophs 兼性自养生物...
• facultative anaerobe 兼性嫌气生物,嫌气性...
• facultative parasite 兼性寄生物
• facultative aerobes [医] 兼性需氧菌...
• facultative anaerobiont 兼性厌气生物...
• facultative autotroph 兼性自养生物...
• facultative treaty 临时分保合同...
• facultative reinsurance 临时分保,临时再保险...
• facultative insurance 临时保险
• facultative plant 不定型植物
• facultative aerobe 兼性需氧微生物,半需...
• facultative heterochromatin 兼性异染色质...
• facultative bacteria 兼性细菌

近反义词

【反义词】

• obligate 使负义务