集邮是研究什么的?
正确答案: 邮票
![Lim Yin Xuan](https://p.cdn.quizzclub.com/ql/2022-08-18/7d148a41c9ec46f3a1c433957b94161e.jpg)
Lim Yin Xuan
我也有收集邮票
![LimGuanyong](https://p.cdn.quizzclub.com/ql/2022-08-19/5bc61b1b5449470bbe585343cd33e5a6.jpg)
LimGuanyong
简单!
![超级金头脑](https://p.cdn.quizzclub.com/ql/2022-03-16/53c744fc2b9c4ba69e0db056747e6ef3.jpg)
超级金头脑
1
![SCP049](https://p.cdn.quizzclub.com/ql/2022-01-24/076503fc6d1848cc8bd8fb0e1092c948.jpg)
SCP049
Easy
![SCP049](https://cdn.best-quiz.com/avatars/0.png)
SCP049
Easy
![Player #12034217](https://cdn.best-quiz.com/avatars/0.png)
Player #12034217
了解