backfire /ˌbækˈfaɪə/ TEM8 ( backfiring, backfired, backfires )

• 1. 

  V-I If a plan or project backfires, it has the opposite result to the one that was intended. 事与愿违

  例：

  The president's tactics could backfire.

  总统的策略可能会事与愿违。

• 2. 

  V-I When a motor vehicle or its engine backfires, it produces an explosion in the exhaust pipe. (机动车或引擎) 回火

  例：

  The car backfired.

  这辆车回火了。