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face to face 面对面(作状语)
face-to-face 面对面的(作定语)
fail to do 失败、未做成
fall asleep 睡着了
fall behind 落后
fall ill 生病
fall in love with sb. 爱上某人
fall off 掉下
fall to pieces 消亡、灭亡、分裂、崩溃
far and near 远近、到处、四面八方
far and wide 广泛地
far more interesting 更有趣
far more 许多
fast asleep 熟睡
feed on sth. 以……为食
feed sb./sth. with/on sth. 用……喂养
feed sth. to sb./sth. 把……喂养给……
feel alone 感到孤单
feel like doing…/sth. 喜爱(做)……
feel lonely 感到孤单
feel one's way 摸索着前进
feel out 探索某人的意图
feel sb. on the head 摸某人的头
feel terrible 感觉不舒服
feel well 感觉舒服
few such mistakes 这么少的错误
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