backfire

裏目に出る

意図したのと逆の結果になり、状況を悪くする。

やさしい英語で： To have the opposite effect from the one intended, making things worse.

• His plan backfired.
• The joke backfired and upset everyone.
• Their attempt to save money backfired on them.

使い方： backfire on someone (The threat backfired on the manager.)

類義語： boomerang

よく使う表現： backfire on someone, backfire badly, plan can backfire

バックファイアを起こす

エンジンが時機や場所を誤って燃料を燃やし、突然大きな音を立てる。

やさしい英語で： For an engine to burn fuel at the wrong time or place, producing a sudden bang.

• The old car backfired.
• The engine backfires whenever I start it.
• A motorcycle backfired loudly outside our window.

よく使う表現： engine can backfire, car can backfire, backfire loudly

アフターファイア、排気管内の爆発

エンジンの排気管の中で起きる、しばしば大きな音を伴う爆発。

やさしい英語で： An explosion in the pipes carrying gases away from an engine, often making a loud bang.

• A loud backfire startled us.
• The motorcycle produced a backfire from its exhaust.
• Unburned fuel caused a backfire in the exhaust pipe.

よく使う表現： exhaust backfire, a loud backfire, backfire from something

逆火、バックファイア

エンジン内で時機を誤って起き、動く部品を逆向きに押すこともある爆発。

やさしい英語で： An explosion inside an engine at the wrong time, which can push a moving part backward.

• A backfire jolted the engine.
• The mechanic traced the backfire to early ignition in the cylinder.
• A severe backfire pushed the piston backward.

類義語： knock, ping

よく使う表現： engine backfire, a sudden backfire, cause a backfire