口侧的呈放射状对称动物之触角向外伸展的部位的，与这一部位有关的，位于这一部位的或口腔所在部位的。

Of, relating to, or located on the part of a radially symmetric animal from which the tentacles radiate or the side where the oral area is found.

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口侧的呈放射状对称动物之触角向外伸展的部位的，与这一部位有关的，位于这一部位的或口腔所在部位的。

Of, relating to, or located on the part of a radially symmetric animal from which the tentacles radiate or the side where the oral area is found.

youdao