A:Cross-cousin marriage is not allowed in China.
A:姑表兄妹在中國是不允許通婚的。
B:It is true of many countries.
B:其他許多國家也是這樣。
A:You know why?
A:你知道為什么嗎?
B:Sure. If people are near in blood, they might pass on some genetic diseases to the next generation.
B:當(dāng)然,近親結(jié)婚會帶給下一代某些遺傳疾病的。