in contact with

According to the theory of numerical economics analysis, a model of jointly and mutually changing relations between water conservancy and social economy is established.

根据计量经济分析理论，建立了水利与社会经济联动和互动关系模型。

touch base with

ph.1. 和...联系

the act of becoming formally connected or joined.

正式联系和联合的行为。

relevant relation or interconnection.

相关的联系和互相联络。

We'll keep in touch with you.

我们将和...联系。

You have to keep in touch with your parents.

你必须和双亲保持联系。

kept in touch with several classmates

和几位同学保持联系

She contacted me as soon as she arrived.

她一到就和我联系了。

Please contact the taxi company.

请和出租车公司联系。

I shall be in touch with you again shortly.

我很快再和你联系.

Maintaining Relation with Foreign Companies

保持和外国公司的联系

I had had no association with them.

我过去和他们没有联系。

She comes into contact with many people.

她和许多人有联系。

to contact with people on other planets,

在和...联系中,

Please connect me to the person in charge.

请帮我和...联系。

(4) Networking with insiders.

（4）和知情人士建立联系。

variety and conditionality of connections

联系的多样性和条件性

Get hold of the authorities.

和有关当局联系一下。

I will contact him by telephone.

我将打电话和他联系。