keel
noun [ C ] uk/kiːl/ us/kiːl/
（船的）龙骨
the long piece of wood or metal along the bottom of a boat that forms part of its structure and helps to keep the boat balanced in the water
江苏热线英汉汉英双解词典包含207361条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。