owing to

由于，因为

overturn, overview, overweening, overweight, overweighted, overwhelm, overwhelming, overwhelmingly, overwork, overwrought, overzealous, oviduct, oviparous, ovoid, ovulate, ovulation, ovum, ow, owe, owing, owl, owlet, owlish, owlishly, own, own brand, own goal, owner, owner-driver, owner-occupied, owner-occupier, ownerless, ownership, ox, ox-eye, Oxbridge, Oxfam, Oxford, oxidation, oxide,