be behind; approve of
同义词：back??/??endorse??/??plump for??/??plunk for??/??support
give support or one's approval to
同义词：second??/??back??/??endorse
guarantee as meeting a certain standard
同义词：certify??/??endorse
sign as evidence of legal transfer
同义词：endorse
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。