1. Scientists have long known that some decidedly nonsexual things can get our brains going. �ܾ�������ѧ���Ǿͷ���ijЩһ�����ں����ص�������������ͷ���˷ܡ�
2. Scientists have long known that some decidedly nonsexual things can get our brains going. �ܾ�������ѧ���Ǿ�ֱ��ijЩһ�����ں����ص�������������ͷ���˷ܡ�
3. However, in some circumstances, nonsexual conduct may take on sexual connotations and rise to the level of sexual harassment. ���ǣ���ijЩ����֮�£����Է���ľ�ֹ���ܻ�����Է���ĺ��壬���ϸ����ߵ���ɧ�ŵij̶ȡ�