Oh, buck up for heaven's sake, Anthony! I'm sick of looking at your miserable face. 噢，安东尼，看在老天的份上振作起来！我不愿看到你那副愁眉苦脸的样子。
She was told that if she didn't buck her ideas up (= start working in a more positive way), she'd be out of a job. 她被告知，如果工作再不积极点儿就会丢了饭碗。
A week at the beach will buck her up. 在海边住一星期会使她精神焕发的。