Definition: to stop trying to do something because you do not think you can succeed Level: C2
他们的候选人应该认输并承认失败。
Their candidate should just ___throw ___in ___the ___towel and admit defeat.
你必须具备韧性：永不放弃。
You have to possess tenacity: never ___throw ___in ___the ___towel.
尽管遭遇挫折，他决定不放弃，继续前进。
Despite the setbacks, he decided not to ___throw ___in ___the ___towel and kept pushing forward.
