1. A famous actor had been imprisoned in the Bastille for twenty years.
    一位著名演员关押在巴士底狱已20年了。

2. A famous actor in a highly successful play was once cast in the role of an aristocrat who had been imprisoned in the Bastille for twenty years.
    有一位名演员曾在一出极为成功的剧目中扮演一个贵族角色，这个贵族已在巴士底狱被关押了20年。