下くだり勾こう配ばい

noun

downhill grade; downgrade

Refers to a downward slope, often used in contexts like roads, railways, or hiking trails.

• この道みちは下くだり勾こう配ばいが続つづくので、自じ転てん車しゃで走はしると気き持もちいい。

  This road continues on a downhill grade, so it feels great to ride a bicycle on it.

• 下くだり勾こう配ばいではスピードが出でやすいから注ちゅう意いしてください。

  Please be careful because it's easy to pick up speed on a downhill slope.