I have a recurrent dream that I've turned into an elephant.

我反复梦见我变成了一头大象。

I have a recurrent dream that I've turned into an elephant.

我屡次梦见自己变成了大象。

Idiopathic RBD is defined as a parasomnia characterised by recurrent dream enactment with loss of the atonia which is normally present during REM sleep.

特发性RBD的定义为深睡眠状态，其特征表现为反复做梦伴正常出现于快速动眼睡眠期的松弛缺损。