-boundWiktionary 原文英美词源链原始印欧语Proto-Indo-European约前 4500–前 2500 年*bʰuH-↓ 继承原始日耳曼语Proto-Germanic约前 500–公元 200 年*būaną↓ 继承古诺尔斯语Old Norse约 7–15 世纪búa↓ 借入中古英语Middle English约 1150–1500 年boun↓ 继承英语English-bound词源说明From bound (“obliged to, certain to”).释义后缀suffix1Moving or travelling towards.2Confined or restricted to a certain place; unable to move in certain conditions; -ridden