马虎从事 meaning in English

discharge business carelessly

Encounter a problem , brains wants to think calmly , do careful analysis to the problem , act on be practical and realistic , a key leaves to go to the principle of the lock doing the work , must not be engaged in cursorily , simple and crude
碰到问题，头脑要冷静想一想，对问题做细致分析，本着实事求是，一把钥匙开一把锁的原则去做工作，千万不要马虎从事，简单粗暴。