水土不服指不能适应移居地方的气候和饮食习惯。

出自明·罗贯中《三国演义》第一二０回：吾兵久劳于外，不服水土，必生疾病。宜召军还，再作后图。

那么水土不服用英语怎么说？

我们可以用not adjusted to the local market来表示某企业在某地水土不服，或者acclimated来表示某人水土不服。例如：

1.要知道，这些年间已有众多“国民车”面对中国特有的用车理念和消费环境表现得如此“水土不服”！
To know that these years have been numerous "national car" in the face of China's unique concept vehicles and consumer environment was so " acclimatized "! 

2.现在有钱人跑出去移民，老外的公司如，谷歌，水土不服，都关门大吉，在西方读博的都不想回来，连那些躲在集装箱里出去的，都大江东去不回头。
We know the riches are emigrating, thewesterners like googles are closing out, the Ph.Ds learning in the west are not returning, those 40’-container-sneak-outers never looked back. 

3.中国人民大学教授、大学生村官专家刘老师解释说，大学教育与农村文化之间的落差导致了这种水土不服。
The poor fit between the university education and the rural culture contributed to the misgivings, explained Liu Laoshi, a Renmin University professor and student village-official specialist. 

4.然而，参与式扶贫在我国扶贫实践过程中，往往由于其与本土实际结合不够，显得＂水土不服＂，需要进一步地完善。
However, China's participatory poverty alleviation needs further perfection, because it doesn't combine well with local conditions and seems endemic during its process of practice. 

5.哪儿能啊，我只是刚来有点儿水土不服罢了。
Come on, it's because I just arrived and haven't acclimated yet.