specializes

v.专攻

He specializes in oriental history. 他专门研究东方史。

I specialize in the sale of cotton piece goods. May I act as your agent? 我专营棉布买卖，我可作为你们的代理吗？

"A science fiction cannot not be regarded as a mere entertainment, but in fact it tells the reader much more." "科幻小说不能简单地看成是供消遣的，而实际上它给读者展示更深刻的内容。"

在英式英语中,specialize也可拼作specialise。