他紧张时总是语速飞快，含糊不清地说个不停。
He tends to ___gabble incoherently when he's nervous.
小鸡们兴奋地叽叽喳喳叫个不停。
The chicks ___gabbled excitedly in the barnyard.
那群鸭子在水边咯咯叫个不停。
The ducks were ___gabbling noisily at the water's edge.
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