Having three sides, trilateral (either as a plane figure or flat body with three edges, triangular; or as a solid figure or body with three lateral…
Having two sides, bilateral; figurative having two parts or aspects.
英语词典包含1132095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。