There, you may see a brother, a sister, a step-sibling, a twin.
那里你可能看到兄弟,或者姐妹,或者异父母同胞,或者双胞胎兄妹。
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The 42% of Americans who have at least one step-relative typically feel a stronger sense of obligation to their biological parent, child or sibling than to their step-relatives, the Pew survey says.