adv.自動(dòng)地；以自由意志
Two disciples voluntarily worked the final clean-ups in the rain, so the rest of us were spared from getting wet. 兩位弟子自動(dòng)地在雨中作最后的清理工作，所以我們其他的人就免于被雨淋濕。
adv.不知不覺地；無意識(shí)地
