1 N-COUNT （过程、政策或趋势的）反转，倒转，逆转 A reversal of a process, policy, or trend is a complete change in it. （过程、政策或趋势的）反转，倒转，逆转
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The Financial Times says the move represents a complete reversal of previous US policy.
《金融时报》说此举一反美国以往的政策。
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This marked a 7% increase on the previous year and the reversal of a steady five-year downward trend.
这标志着在前一年基础上有了7％的增长，扭转了5年来持续下降的趋势。
SYN turnaround, U-turn, backtracking, turnabout
2 N-COUNT [n NOUN] （角色的）交换，互换 When there is a role reversal or a reversal of roles, two people or groups exchange their positions or functions. （角色的）交换，互换 [Also + of]
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When children end up taking care of their parents, it is a strange role reversal indeed.
当孩子们最终要照顾父母时，这的确是一种奇妙的角色互换。
3 N-COUNT [usually plural] (通常涉及金钱损失的)失败，逆境，挫折 A reversal is a failure, usually involving the loss of money. (通常涉及金钱损失的)失败，逆境，挫折 [formal]
SYN failure, failing, loss, defeat
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