WORD BY WORD

voucher

英/vˈaʊtʃɐ/
美/ˈvaʊtʃɝ/
01n.

证人, 保证人, 证明者, 凭证, 凭单

someone who vouches for another or for the correctness of a statement; a document that serves as evidence of some expenditure

02v.

证实...的可靠性