Definition
To remain cheerful and optimistic despite facing difficulties or setbacks.
振作起来；保持乐观
Despite facing many challenges, she managed to keep her pecker up.
尽管面临许多挑战，她仍然保持乐观。
After hearing the bad news, he needed his friends to encourage him to keep his pecker up.
听到坏消息后，他需要朋友鼓励他振作起来。
I told my teammates to keep their pecker up, even after losing the game.
我告诉队友们，即使在输掉比赛后也要保持乐观。