reversal

n.厄运，挫折

reveller (US reveler), revelry, revenge, revengeful, revengefully, revengefulness, revenue, reverberant, reverberate, reverberation, revere, reverence, reverend, Reverend Mother, reverent, reverential, reverentially, reverie, reverler, revers, reverse, reverse gear, reverse turn, reversed, reversibility, reversible, reversing light, reversion, reversionary, revert, revertible, revetment, review, reviewer, revile, revise, revised, revision, revisionism, revisionist,