相关单词近义词 hard 硬的, actively 积极地, energetically 精力充沛地, spiritedly 有精神地, tirelessly 不厌倦地, persistently 固执地, vigorously 有力地, doggedly 固执地临近词strenuous, strenuous vibration, strenuous examination, strenuous practical dril 返回 strenuously