低てい空くう飛ひ行こう

noun

low-altitude flying; flying at low altitude

Literal aviation term for flying close to the ground or sea surface.

• ヘリコプターが低てい空くう飛ひ行こうで山やまの斜しゃ面めんを調しらべていた。

  The helicopter was flying at low altitude, inspecting the mountain slope.

noun

barely scraping by; consistently poor results; on the verge of failing

Figurative use likening poor performance to flying dangerously low; often used for grades, sales, or approval ratings that are barely above failure.

• 今こん学がっ期きの成せい績せきは低てい空くう飛ひ行こうで、なんとか赤あか点てんを免まぬがれた。

  My grades this semester were barely scraping by; I just managed to avoid failing marks.

• 新しん製せい品ひんの売うり上あげは低てい空くう飛ひ行こうが続つづいている。

  Sales of the new product continue to barely scrape by.