短語詞組短語fall fall back on 求助于Fall off On 打開衰減fall down on rainfall 雨淋降落fall bak on 依靠fall back on experiments 求助于實驗fall back on upon 求助于Fall colors on campus 校園的秋色fall down on stage 跌倒在舞臺上fall back on 求助于;借助于;依賴;依靠 返回 fall on