narrative arc

The documentary follows a classic narrative arc, moving from the establishment of a problem to its eventual resolution.这部纪录片遵循经典的叙事弧线，从问题的确立发展到最终的解决。

Screenwriters are taught to structure scripts around a clear narrative arc with identifiable turning points.编剧被教导要围绕具有明确转折点的清晰叙事弧线来构建剧本。