to knock together continuously because you are cold or frightened （因冷或害怕）打颤
[I] ~ (away/on) (to sb) (about sth)to talk quickly and continuously, especially about things that are not important 喋喋不休；唠叨；饶舌
They chattered away happily for a while.
他们高兴地闲扯了一会儿。
The children chattered to each other excitedly about the next day’s events.
孩子们很兴奋，没完没了地谈论着第二天的活动。