It could look like they didn't take the work seriously, but they really did because they're going to have to live with radioactivity their whole life.
일을 진지하게 생각하지 않는 것처럼  보일 수도 있겠지만 그렇지 않습니다. 남은 인생을 방사능 속에 살아가야 하니까요.