N-COUNT Someone's stepsister is the daughter of their stepfather or stepmother. 继姐; 继妹
Now she must talk her sister through the process a step at a time.
现在她必须向她姐姐详细解释这个过程，一次只说一个步骤。
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。
GAP Adventures took its focus on social and environmental responsibility one step further by launching a sister nonprofit organization, the Planeterra Foundation, in 2002.
2002年GAP Adventures公司启动了一个女性非营利机构Planeterra基金，以进一步关注社会和环境责任。
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