Single-gender education has always been a conventional issue in the USA.
美国的单性教育一直是一个值得争议的问题。
2
Cross-dressing, single-gender theater groups have a long history in Japan.
单性别变装剧团在日本有悠久的历史。
3
But any discussion of gender differences in children inevitably leads to this debate, so I felt compelled to dive into the research data on single-sex schooling.