✔ 最佳答案
The stand of the catholic church is that Mary was virgin through the whole life. She didn't have sex with Joseph after she had given birth to Jesus.
The so-called brothers of Jesus in Bible were acutally cousins of Jesus. Since brothers and cousins are of the same word in Greek.
Of course, everyone has his/her own way to interprete the Bible. But I believe only the church have to right to do so. Since Bible was come from God through the church.