sanity
noun [ U ] uk/ˈsæn.ə.ti/ us/ˈsæn.ə.t̬i/
心智健全的状态，神智正常的状态;头脑清醒的状态
the state of having a healthy mind and not being mentally ill
He'd been behaving so strangely that they began to doubt/question his sanity. 他的行为举止非常怪异，他们开始怀疑他的精神是否正常。
to keep/preserve/retain your sanity 保持清醒
明智的状态
the fact of showing good judgment and understanding
The closer we got to the deadline for action, the more I questioned the sanity of the decision we had taken. 越是临近期限，我越是怀疑我们的决定是否明智。
Maybe Jenny can bring some sanity into this crazy situation. 也许珍妮能够为种疯狂的局面中带来几分清醒。