thud

砰的一声、闷响、重击声

The heavy book fell off the shelf with a loud thud.

那本厚书从架上掉下来，发出砰的一声。

砰地落下、发出闷响

A ripe mango thudded onto the grass beside us.

一颗熟透的芒果砰地掉在我们旁边的草地上。

重重地走、咚咚作响

He thudded up the stairs in his heavy boots.

他穿著厚重的靴子咚咚地走上楼梯。

怦怦跳多指心跳

Her heart thudded as she opened the envelope.

她拆开信封时，心脏怦怦直跳。