The photographer snapped a nice photograph of him.

摄影师给他拍了一张很棒的快照。

This snapshot hasn't printed very well.

这张快照印出来不太清楚。

Background: Rapid eye movement sleep behavior disorder (RBD) is a parasomnia that is manifested by dream enactment behavior.

【正文快照】 背景:快动眼睡障碍(RBD)一种梦境的深状态。