Just because the other kids have motor scooters is no reason for you to stop riding your bike to school.
只是因为其他的孩子都有电单车上学,不足以成为你不骑车上学的理由。
In this way self-confidence grows, first from mastering a subject, then from being able to take about it.
这样,你自信心不断增强,先是因为掌握一门学问,接下来是因为能够就此发表见解。