How do you pronounce 溶洞?

Q: How do you pronounce 溶洞? A: jung4 dung6, e.g.

溶洞 (jung4 dung6) — meaning, pronunciation, examples

溶洞 (jung4 dung6, róng dòng) — (geology) solutional cave (typically, a limestone cave)

溶 (jung4) — (slang) kill or destroy (someone); to dissolve; soluble; to melt; to attack; to…
溶溶爛爛 (jung4 jung4 laan6 laan6) — worn out and in shambles
溶劑 (jung4 zai1) — solvent
溶化 (jung4 faa3) — to melt; to dissolve (of sugar etc)
溶栓 (jung4 saan1) — thrombolysis (med.)
溶沒 (jung4 mut6) — to fade away; to disappear; to hide from view