have a crush on sb 迷恋某人
take up/accept the challenge 接受挑战
backbone: courage and determination 勇气/胆量
翻译下面的句子:
He didn't have the backbone and gave up the scholarship application at the last moment.
他没有胆量,在最后一刻放弃了奖学金申请。
我没有当众演讲的勇气
I don't have the backbone to speak publicly.