士气

1. 他们唱　歌以保持高昂的士气。
   They sang songs to keep their morale up.
2. 他们以唱歌来鼓舞士气。
   They bolstered their morale by singing.
3. 那支球队未曾赢得一场比赛，因此已全无士气。
   That team had won no games and it lost heart

士的英语翻译：

气的英语翻译：