相关单词近义词 plunge 使投入, fall 落下, drop 落下, dive 潜水, tumble 暴跌, swoop 抓取, crash 撞击, nose-dive 俯冲, descent 下降, plump 丰满的, plumb bob 铅锤, plumb （用铅垂）测量...临近词plump, plume, plummet lamp, plummet line, plummet level, plummet method, plummet instrument, plummeting approval rating 返回 plummets