painless

adj not causing pain or distress 无痛的; 不引起痛苦的: a painless injection 无痛注射.

paella, pagan, paganism, page, pageant, pageantry, paginate, pagination, pagoda, paid, paid-up, pail, pailful, paillasse, pain, pain-killer, painful, painfully, painfulness, painkiller, painlessly, painlessness, pains, painstaking, painstakingly, paint, paintbox, paintbrush, painter, painting, paintwork, pair, paired, Paisley, pajamas, Pakistan, Pakistani, pal, palace, palace revolution,