洞穴dòngxuécave; cavernHSK 7-9PronunciationdòngxuéExample sentence探险队在深山里发现了一个巨大的洞穴。tànxiǎn duì zài shēn shān lǐ fāxiàn le yí gè jùdà de dòngxué。The expedition team discovered a huge cave deep in the mountains.Read and choose an answerOne fixed sampleExplore a sample