in peace with 结构和意义分析：
这是一个“in + 抽象名词 + with”结构，用来表示“主语和 with 后的宾语之间，处于一种什么关系或状态中”。特点：
1. 从结构看，可以把这个词组视为复合介词，不宜拆分。

2.既然是抽象名词，自然用单数，不加任何关冠词。

3. 从语法作用看，介词短语可以作状语，也可以用作表语。

4. 从表意上看，这类结构主要表示“当事人双方之间的关系”，例如：“一致、协作、和睦、竞争、分歧、麻烦、纠葛”等意义。

5. 意思: in peace with 与...和平相处

常见的有：
in peace with 与...和平相处
in trouble with 与...有麻烦/纠葛/纠纷
in competition with 与...竞争
in agreement with 与...意见一致
in accordance with 与…一致；按照
in contact with 与...有接触、有联系
in common with 与... 相通；与…同样
in connection with 与…有关联
in comparison with 与…对比；对照
in relationship with 与...有关系，有交往
in accord with与…一致
in conjunction with 与...配合、协作
in contrast with 与...相对比
in harmony with 与…和谐；与…一致
in keeping with与…一致
in line with与…一致
in love with 与...相爱
in unity with 与...团结、和睦
in unison with与…一致
in disagreement with 与...不合、有分歧
in contradiction with 与...有抵触、有矛盾
in conflict with与...有冲突、有矛盾

举一个例子：She asked him if he had ever been in trouble with the police.

The people long for a lasting peace：抽象名词之前加上描写形容词，变成单数可数名词，这叫做“抽象名词具体化”。