Harbour
来自Big Physics
late Old English herebeorg ‘shelter, refuge’, herebeorgian ‘occupy shelter’, of Germanic origin; related to Dutch herberge and German Herberge, also to French auberge ‘inn’; see also harbinger.
etymonline
harbour
chiefly British English spelling of harbor (n. and v.); for spelling, see -or. In this case it is considered to be without etymological justification and probably by analogy of labour.
