When birds such as doves and pigeons coo, they make a low soft sound.(鸽子等)咕咕地叫
to speak in a soft, gentle, or loving way低声细语,轻柔地低语;呢喃
The baby lay in his cot, cooing and gurgling.婴儿躺在自己的小床上,咿咿呀呀,咯咯笑着。
It's sickening the way she coos over those cats of hers.她对她那些猫柔声低语的样子令人作呕。
[ + speech ] "How wonderful to see you again, darling," she cooed.“又见到你真高兴,亲爱的,”她柔声低语道。