?溺谷
... drought-resistant plant抗旱性植物 drowned river valley （rai）溺谷；溺河 drumlin脊背丘；鼓丘 ...
?溺河
?溺河谷
... 沈溺河口 drowned river mouth 溺河谷 drowned river valley 溺河 drowned stream ...
This is a drowned volcanic valley, so the river is very, very deep.
BBC: A wild river valley outside of Sydney
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。