I don't have much contact with my uncle.
我和叔父甚少联系。
He was unable to contact Blake by radio.
他未能通过无线电和布莱克取得联系。
Can you suggest how I might contact him?
我怎么才能联系上他，你能出个主意吗？
I've been trying to contact you all day.
我整天一直在设法与你联系。
How did you make contact with the author?
你怎么跟这位作者联系的？