Tsien and colleagues say that their genetic intervention succeeded in erasing memories in the long-term, but in the mouse world, long-term means two weeks.

曾乔和他的同事表示，通过干涉基因成功使记忆“长期”消除，但在老鼠的世界里，长期指的是两星期。

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The authors suggested their findings showed that cannabinoids played a key role in erasing painful memories.

BBC: 'Natural' cannabis manages memory

And victory went a long way to erasing the painful memories of the last World Championships in Seville in 1999, when she lost the title to Spain's Niurka Montalvo on a controversial final jump.

BBC: May's leap is just enough