Jī-têng he̍k-chheⁿ

Tē-kiû kap Goe̍h-niû

Jī-têng he̍k-chheⁿ (二重惑星) sī chi̍t ê hui-chèng-sek ê thian-bûn-ha̍k su̍t-gú, the̍h-lâi biâu-su̍t chi̍t lia̍p chûn-chāi tio̍h toā lia̍p ōe-chheⁿ ê he̍k-chheⁿ.