我妈妈再婚后，我和她的新丈夫带来的两个孩子成了继兄妹。

After my mom remarried, her new husband's two children became my ___step-siblings.

虽然我们没有血缘关系，但我和我的继兄弟姐妹相处得很融洽。

Although we're not related by blood, I get along well with my ___step-siblings.