“打气”造句

当有人觉得情绪低落时，要努力相互打气。
Try to support each other when one of you is feeling down.

他们感到要为自己加油打气，自信满满地去打比赛并不容易。
They find it difficult to pump themselves up for the games.

我写那首歌是给我自己打气的。
I wrote that song just to cheer myself up.