英汉词典

1. 心智健全的;神志正常的
    Someone who is sane is able to think and behave normally and reasonably, and is not mentally ill.

    e.g. He seemed perfectly sane...
           他似乎神志完全正常。
    e.g. It wasn't the act of a sane person.
           心智健全的人做不出这种事来。

2. 清醒的;明智的;合情合理的
    If you refer to a sane person, action, or system, you mean one that you think is reasonable and sensible.

    e.g. No sane person wishes to see conflict or casualties.
           理智的人都不愿意看到冲突或伤亡。
    e.g. ...a sane and safe energy policy.
           安全合理的能源政策