Of course, not all currencies can depreciate against one another at the same time. But the current wave of efforts, despite being far from optimal, can persist for a while, so long as at least two conditions are met.
当然，不可能所有货币都同时相对彼此贬值。但目前的动作尽管远远称不上最优选择，总归可以维持一段时间，只要满足至少两个条件。