He and his wife finally had to move from their apartment just to preserve their sanity.是什么意思？

He and his wife finally had to move from their apartment just to preserve their sanity.

为了不致发疯，他和妻子最终只得从公寓中搬出。

he

pron. 他，它，一个人；n. 雄性动物；

例句
Logic had prevailed and he had abandoned the idea.
最终理智占了上风，他打消了那个念头。

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

his

pron. (he的所有格)他的，(he的物主代词)他的东西；det. 属于他的，用于名词前，自己的，指某人的，上帝的；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

wife

n. 妻子，太太，夫人，老婆，已婚妇女；

例句
His wife was sentenced to seven years imprisonment for aiding and abetting him...
他的妻子作为他的从犯被判入狱7年。

finally

adv. 最后，终于，总算，末后，结果；

例句
...until the great day came when the Germans could finally settle accounts with the British...
直到德国人最终能和英国人清算旧账的重大日子的来临

had

v. 有（ have的过去式和过去分词 ），（亲属关系中）接受，拿，买到；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

move

vt.& vi. 移动，搬动；vi. 搬家，行动，进展，（机器等）开动；vt. 提议，使感动，摇动，变化；n. 改变，迁移；

例句
He felt he was on the edge of an abyss; one false move and he was done for...
他觉得如临深渊，一步不慎便会永劫不复。

from

prep. （表示时间）从…，（表示原因）因为，（表示来源）来自…，（表示分离）与…分离[隔开]；

例句
...an abortive attempt to prevent the current President from taking office.
企图阻止现任总统连任的失败尝试

their

pron. 他（她，它）们的，在提及性别不详的人时，用以代替 him 或 her；

例句
Their permissiveness toward their children reflects the wild abandon of their own lives.
他们对孩子的放任折射出他们自身生活的放浪形骸。

apartment

n. 寓所，住房，房间，公寓楼，（有特殊用途或专属某人的）豪华寓所；

例句
...bleak cities of concrete apartment blocks.
到处是水泥公寓楼群的沉闷的城市

just

adv. 刚才，仅仅，只是，正好，刚要；adj. 公正的，合理的，恰当的，合法的，正确的；

例句
It became very clear that the incident was not just an aberration, it was not just a single incident.
事实已经很清楚，这件事不是偶发的，它并不是一起孤立的事件。

preserve

vt. 保护，保持，保存，腌制食物，防腐处理；vi. 保鲜，保持原状，做蜜饯，禁猎；n. 蜜饯，防护用品，禁猎地，独占的事物（或范围）；

例句
The only way to preserve democracy is to raise hell about its shortcomings.
维护民主的唯一办法是对其缺陷大声提出意见。

sanity

n. 神志正常，心智健康，头脑清楚，通情达理；

例句
He pleads for sanity in a lunatic world.
他祈求在这混乱的世界里仍能保持头脑清明。