English ⇄ Russian

drop with a plopping noise stresses
Gruzovik, inf.	бултыхать (into a liquid)
Makarov.	бултыхать (into liquid)
drop with a plopping noise into liquid
Gruzovik, inf.	бултыхнуть (semelfactive of бултыхать)

drop with a plopping noise: 2 phrases in 1 subject

Informal

2