vt.斷言；保證
Millions were ready to avouch the exact contrary. 億萬(wàn)人愿斷言事實(shí)恰恰相反。
He offered to avouch his innocence with his sword. 他表示愿以劍來(lái)保證他是無(wú)辜的。
We can avouch for the quality. 我們保證質(zhì)量。
