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英語名詞單復變化的規(guī)則
two knives規(guī)則以f,fe結(jié)尾的去掉f,fe,加ves,a calf,two calves,a wolf,two wolves,a handkerchief,three handkerchiefs
2017-10-23
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two knives規(guī)則以f,fe結(jié)尾的去掉f,fe,加ves,a calf,two calves,a wolf,two wolves,a handkerchief,three handkerchiefs
2017-10-23