plop

扑通落下、咚一声掉落

A small stone plopped into the pond and disappeared.

一颗小石头扑通一声掉进池塘里不见了。

随手放下、重重放下口语

She plopped her heavy bag on the kitchen table.

她把沉重的包包往厨房桌上一放。

一屁股坐下、瘫坐口语

He plopped down on the sofa and closed his eyes.

他一屁股坐在沙发上，闭起了眼睛。

扑通声、咚的一声

We heard a soft plop as the fruit hit the water.

水果落进水里时，我们听到轻轻的扑通一声。