丁克族 [－－－]

Jyutping ding1 hak1 zuk6
Pinyin dīng kè zú

Definitions (Wiktionary)

noun, Mainland-China
DINK couples (a childless couple with two jobs and thus two incomes)

Definitions (兩岸三地生活差異詞語彙編—Two Shores Three Places)