“公爵的”的英语可以翻译为：ducal ...

她是六位公爵的好朋友.She was a good friend of six British dukes.卢斯勋爵迫于爱丁堡公爵的压力作了让步，为日后埋下了巨大隐患。Lord Luce's capitulation to pressure from the Duke of Edinburgh has stored up huge problems for the future.公爵的书房颇具阳刚气，深红色墙纸，深色的橡木搁板...