The notion that boys are mostly more high-achieving in mathematics than girls is actually a kind of genderdiscrimination for no scientific evidence can support it.
男孩子在数学上比女孩学习成就较为优异的观念是一种性别歧视，因为没有科学证据能证明它。
2
This paper mainly sketches out gender studies of western countries in language teaching from three angles: genderdiscrimination, gender differences and gender equality .
西方在外语教学中的性别研究，从性别歧视、性别差异和两性平等教育三方面进行概述。
3
Genderdiscrimination in employment mainly shows in three areas: employment opportunity discrimination, employment treatment discrimination and employment training discrimination.