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remain sane
She tried to remain sane during the long lockdown.
她试图在长时间的封锁期间保持神智清醒。
神智健全的；精神正常的
sanest — superlative of sane
先理解核心含义，再看它在真实句子里的用法。
神智健全的；精神正常的
mentally healthy; free from mental disorder
She tried to remain sane during the long lockdown.
她试图在长时间的封锁期间保持神智清醒。
处于健康状态；不疯狂；思维理智
Being in a healthy condition; not deranged; thinking rationally.
精神健全；拥有理性思维；具备判断行为影响的能力
Mentally sound; possessing a rational mind; having the mental faculties in such condition as to be able to anticipate and judge the effect of one's actions in an ordinary manner.
理性的；合理的；明智的
Rational; reasonable; sensible.
After a quiet weekend at home, I felt sane enough to face the busy week again.
在家安静地度过周末后，我觉得自己恢复了精神正常的状态，足以再次面对忙碌的一周。
Talking to a friend helped her stay sane during the stressful move.
在压力很大的搬家期间，和朋俉聊天帮她保持了精神正常。
He seems perfectly sane to me, so I trust his judgment.
在我看来他完全精神正常，所以我信任他的判断。
She tried to remain sane during the long lockdown.
她试图在长时间的封锁期间保持神智清醒。
He was sane enough to recognize the danger.
他足够理智，能够认识到危险。
Exercise helps keep me sane.
锻炼有助于我保持头脑清醒。
It is sane to take a break when you feel overwhelmed.
当你感到不知所措时，休息一下是明智的。
Not this
I doubt his sane.
Use this
I doubt his sanity.
错误：将形容词 'sane' 误当作名词使用。'sane' 是形容词，表示‘神智健全的’；表示‘神智健全的状态’应用名词 'sanity'。改正后使用名词 'sanity' 作为宾语。
Not this
These two policies are not the sane.
Use this
These two policies are not the same.
错误：混淆了发音相似的 'sane' 和 'same'。'sane' 意为‘神智健全的’；'same' 意为‘相同的’。根据句意，这里应该用形容词 'same' 表示‘相同的’。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
保持理智；保持精神正常
Listening to music helps me keep sane during busy weeks.
听音乐帮助我在忙碌的几周里保持理智。
完全正常的；非常理智的
She came across as perfectly sane and reliable.
她给人的印象是完全正常且可靠的。
没有一个心智健全的人
No sane person would ignore such clear evidence.
任何心智健全的人都不会忽视如此明显的证据。
一个明智的方法
Taking breaks is a sane approach to heavy workloads.
在繁重的工作中稍作休息是一种明智的方法。
一个明智的决定
It was a sane decision to leave early.
提前离开是一个明智的决定。
让某人保持理智/精神正常
Talking to my best friend every day keeps me sane.
每天和最好的朋友聊天让我保持精神正常。
和一般人一样正常（指精神状态正常）
Despite his wild ideas, he is as sane as the next person.
尽管他的想法很狂野，他和一般人一样正常。
在一个理性/正常的世界里（暗指现实并非如此）
In a sane world, we would not need to lock our doors at night.
在一个正常的世界里，我们夜里不必锁门。
Use sanest naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
sane 可拆解为 insane（疯狂的）去掉否定前缀 in-，剩下的就是心智健全、头脑清醒。记住：没有 in- 的 sane 才正常。
语域：mixed 常见场景：心理健康或法律语境、日常讨论决定、计划 sane 在描述精神健康时较正式，多用于医疗或法律语境；在日常口语中常引申指“明智、合理”，属于相对中性的用法。选择时可根据内容判断：指精神正常时偏正式，指想法或做法合理时更日常。
All these words rhyme with sane /seɪn/: pain, rain, main, lane, plane, train. The spellings -ain and -ane both represent /eɪn/. Be careful with the lookalike 'sanity' /ˈsænəti/, where the 'a' is /æ/ not /eɪ/.
Dictionary facts from ECDICT, WIKTIONARY.