The stereotyped sex roles in textbooks do not fit well with reality. 教科書里刻板的性別角色,與現實環境並不盡符合。
This scarcity reverses normal gender roles, because females are in demand in populations with an equal sex ratio. 雄性成為稀有動物之後,傳統的性別角色都顛覆了,因為在性別比例平衡的情況下,待價而沽的是雌性。