ㄩㄢyuānㄏㄞˇhǎi

  1. 比喻一般深廣·王充論衡·》:駿漢朝智囊筆墨淵海。」南朝·徐陵〉:風雲深淵。」

(lit.)​ abyss and ocean, (fig.)​ vast and profound