front runner

person who seems most likely to succeed or win, eg in a race or contest 最有可能成功或获胜的人（如在比赛或竞争中）; 领先者: Who are the front runners in the Presidential contest? 哪些人在总统竞选中最有可能获胜?

fro, frock, frock coat, frock-coat, frog, frog-march, frog-spawn, frogman, frolic, frolicsome, from, from memory, from now on, from side to side, from then on, from time to time, from...to, frond, front, front man, front-page, frontage, frontal, frontier, frontiersman, frontispiece, frost, frost-bite, frost-bitten, frostbound, frostily, frostiness, frosting, frosty, froth, frothily, frothiness, frothy, frown, frowsty,