to come on like gangbusters (c. 1940) is from popular U.S. radio crime-fighting drama "Gang Busters" (1937-57) which always opened with a cacophony of sirens, screams, pistol shots, and jarring music.
实用例句
1. The economy was still going gangbusters.
经济依然保持着强劲的发展势头。
来自柯林斯例句
2. The team, who struggled early, came on like gangbusters at precisely the right time.
