观察以下课文原句并思考黑体部分的功能与构成:
1. The digital age also enables us to find people who share our interests, such as collecting model cars or playing an unusual instrument.
2. Nowadays, we can move around the world and still stay in touch with the people that we want to remain friends with.
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句中黑体部分引导的是定语从句, 它们均为关系代词。
