The literary way of guo mo - ruo shows a complicated course of 20 century chinese literature from fetal irritability to anguish adolescent age at a lateral surface 郭沫若所走的文学道路，从一个侧面折射出20世纪中国文学从胎动腹中到苦涩青春的曲折历程。
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Dorsiventral describing a structure that has distinct upper and lower surfaces . a dorsiventrally flattened structure has flat dorsal and ventral surfaces and very narrow lateral surfaces 异面（背腹型） :指上下表面结构具有明显差异。异面平滑结构指有平滑的背、腹面，以及非常狭窄的侧表面。
