He seems to smatter in several languages.

他似乎对几种语言都略知一二。

She can smatter about art, but she's not an expert.

她对艺术略知一二，但并不是专家。

They smatter in cooking, but they prefer eating out.

他们对烹饪略知一二，但更喜欢外出就餐。

He likes to smatter about history during conversations.

他喜欢在谈话中对历史略知一二。

I only smatter in programming, so I need help with this project.

我对编程只略知一二，所以这个项目需要帮助。