To vanquish someone means to defeat them completely in a battle or a competition.
例句
A happy ending is only possible because the hero has first vanquished the dragons...只有主人公先把那些惡龍制服，才有可能實(shí)現(xiàn)大團(tuán)圓結(jié)局。With knowledge and wisdom, evil could be vanquished on this earth.擁有了知識(shí)和智慧就能夠把惡勢(shì)力從這個(gè)世界上鏟除。
英漢詞典釋義
vt.
<文>征服,戰(zhàn)勝
She had fought many battles, vanquished many foes.她身經(jīng)百戰(zhàn)，挫敗過很多對(duì)手。
克服;抑制
He tried to vanquish his fears.他努力克服恐懼心理。
英英詞典釋義
Verb
1. come out better in a competition, race, or conflict;
"Agassi beat Becker in the tennis championship""We beat the competition""Harvard defeated Yale in the last football game"