动词 coo:

1. speak softly or lovingly

2. cry softly, as of pigeons

coomn.煤烟(锯屑)coon.鸽叫声v.咕咕地叫；(温柔而轻声地)说情话abbr.首席运营官(=Chief Operating Officer)coorrected dipole coordinates订正偶极坐标系coordinating liver and spleen调和肝脾Coomb's antiglobulin reaction科雷曼斯coordinating con-trol system协调控制系统coordinating liver and stomach调和肝胃coordinator of data processing数据处理的协调程序Coordinating Authority for Air航空作战协调官coomassie blueStaining Solution考马斯亮蓝染色液coodinate urban and rural areas统筹城乡coordinative development degree协调发展度

1. A pigeon is cooing up in one of the elm.
   一只鸽子在榆树上咕咕地叫。
2. He took his girlfriend home after the party and they stayed in the car billing and cooing for a long time before she went into her house.
   聚会结束后他送他的女朋友回家，他俩在车上亲昵低语了很久后她才下车进屋。