杰克给人鞠躬，飞快地一点头，就算完了。

When Jack bowed to someone, he always did it at lightening speed.

youdao

在其他国家，人们打招呼时紧紧地握手，或亲切的拥抱，或鞠躬，或只是点点头。

In other countries people greet each other with a firm handshake, a loving hug, a bow or simply a nod of the head.

youdao

俯首，弯身：头或身体的低或弯，如点头或鞠躬。

To lower or bend the head or body, as in a nod or bow.

youdao