玄孫 angolul

great-great-grandchild▼(the child of one's great-grandchild)
noun

great-great-grandson▼(the son of one's great-grandchild)
noun
[UK: ˈɡreɪt ˈɡreɪt ˈɡræn.sʌn] [US: ˈɡreɪt ˈɡreɪt ˈɡrænd.ˌsən]