vouched的音标：...

v.保证，断言，承认( avouch的过去式和过去分词 )...

Have all those present been vouched for?那些到场的人都有担保 吗 ?...

avouched的音标：...

v.保证( vouch的过去式和过去分词 )，担保，确定，确定地说...