abbreviation for bisexual :
twice, or once every two:
Thesaurus: synonyms and related words
Relating to regular periods of time
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having two:
Numbers: cardinal, including nought & zero
英语词典包含110679条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。