As if on cue, brilliant purple light washed along the walls as the massive, bulbous form of a Wraith slid into view from behind an abandoned commuter bus.

就在这时，明亮的紫光沿洞壁传来，一辆废弃的通勤巴士后闪出了巨大鳞茎状外形的亡魂号。

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Cue the light bulb moment and the start of a route to responsibility.

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In one experiment, Oldis and another colleague named Marjorie Kaye had both entered REM sleep, when the program turned on the red light bulb cue for Oldis.

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When illuminated, these "opsin" proteins change the flow of electrically charged ions within the cell, to help the cell turn light into energy or as a sensory cue.

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