open season
noun uk/ˌəʊ.pən ˈsiː.zən/ us/ˌoʊ.pən ˈsiː.zən/
[ S or U ]（法定的）渔猎开放季节，狩猎期
the period in the year when it is legal to hunt particular animals
Compare: close season
[ U ]（针对某些团体的）不公正待遇
a situation that allows or causes a particular group of people to be treated unfairly
To pass this legislation would be to declare open season on homosexuals. 这项法律的通过就是宣布对同性恋者采取不公正待遇。