coo
verb [ I ] uk/kuː/ us/kuː/ cooing | cooed
（鸽子等）咕咕地叫
When birds such as doves and pigeons coo, they make a low soft sound.
低声细语，轻柔地低语;呢喃
to speak in a soft, gentle, or loving way
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。