for instance

例如，举例说

footstep, footstool (also stool), footway, footwear, footwork, fop, foppish, for, for (the) purpose of, for a moment, for a while, for ages, for all that, for another two days, for certain, for ever, for example, for fear of, for fear that, for good, for lack of, for life, for long, for one thing, for one thing...for another, for one's sake, for sale, for short, for some reason, for sure, for the best, for the better, for the first time, for the future, for the moment, for the most part, for the present, for the purpose of, for the rest, for the sake of,