短语词组短语labour doubtfully 难以预料地劳动add doubtfully 难以预料地增加attack doubtfully 难以预料地攻击declare doubtfully 难以预料地断言lie doubtfully 难以预料地撒谎doubtfully detail 迷惑不解地disbelievingly doubtfully dubitatively enquiringly skeptically 怀疑地 返回 doubtfully