搭配 “a chequered past” 或 “a chequered history” 字面上的意思是 “斑斑駁駁的過去”，但其實際意思是比喻一個人過去的經歷好壞參半。單字 “chequered” 原本指 “格子圖案的”，在這裡它形容人跌宕起伏的過去。
所以，搭配 “a chequered past” 多用來告誡人們某人曾作過不光鮮的事情，所以不能輕易信任。
I’m not sure that Tim is suitable for this job – it seems like he can be trusted, but he has a chequered past.
The famous singer is working hard for many good causes – the environment, poor children, and refugees. Maybe he hopes everyone will forget about his chequered past.
As a result of his chequered past, he has found it difficult to persuade the bank to lend him the money he needs to set up his business.