play with fire
to act in a way that is not sensible and take dangerous risks 玩火;冒险
She was playing with fire by secretly borrowing office funds.
她暗中挪用公款简直是玩火.
He knew he was playing with fire by dating a student.
他知道跟学生约会是玩火.
He who plays with fire gets burned.
玩火者必自焚.
adj. 放松的, 松懈的,随意的 relax的过去式(