Kids used to trade baseball cards.

孩子们过去常互相交换棒球卡片。

《柯林斯英汉双解大词典》

He buys rare baseball cards on eBay.

他从易趣网上购买珍稀的棒球卡。

《牛津词典》

Some people collect baseball cards, teapots, or seashells.

有些人收集棒球卡、茶壶或贝壳。

youdao

So I love the game. And I used to trade baseball cards but,

所以我热爱运动。我过去常交易棒球卡，但是，

会打棒球吗？ - SpeakingMax英语口语达人

Someone who is solely interested in baseball cards will not exclusively see baseball cards on Discover.

FORBES: Magazine Article

By 14 he had amassed a collection of more than 1 million baseball cards and autographs.

FORBES: Magazine Article

When I was a kid growing up in Miami, I used to trade baseball cards.

FORBES: By Zack Miller