为自己的兄弟姐妹铺路，这意味着长子长女要较早地学着承担一些严肃的责任。
Forging the path for their fellow siblings means eldest children learn some serious responsibility early in life.
长子长女不仅会在学校表现得很好，他们也会在职场更加成功。
Not only do eldest children perform better in school, they also might be more successful in the professional world.
根据作者所述，长子长女经常教授他们的弟弟妹妹，这帮助他们更好地记住信息。
Eldest children often "teach" their younger siblings, which can help them to better retain information, according to the authors.
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