一馬平川 [－马－－]

Jyutping jat1 maa5 ping4 cyun1
Pinyin yī mǎ píng chuān

Definitions (CC-CEDICT)
  1. flat land one could gallop straight across (idiom); wide expanse of flat country
Definitions (Wiktionary)
  1. phrase, idiomatic
    wide expanse of flat land; wide stretch of flat country
    (syn.) 一坦平洋
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）