如果瑪麗和凱特是朋友，那么與凱特交往就是與瑪麗保持聯系的一個途徑。
If Mary and Kate were friends, then to consort with Kate was one way of keeping in touch with Mary.
＂與此同時，兩小時前放進去了一只麥克風，使這些人能與他們最親近的親屬保持聯系。＂
"Meanwhile, a microphone, which was lowered into the mine two hours ago, has enabled the men to keep in touch with the closest relatives."
他與經理保持聯系。
He kept in touch with his manager.
我在旅行期間輿同學們保持聯系。
I kept in touch with my classmates during my journey.
