sanity
/ˈsænətɪ; `sænətɪ/ n[U]
1 state of being sane; health of mind 神志正常; 心智健康
doubt/questionsb's sanity 怀疑某人神志是否正常.
2 soundness of judgement; state of being sensible or moderate 明智; 理智; 稳健
try to bring some sanity into a difficult situation 在困难情况下, 力求理智.