The child obsesses over playing video games.

这个孩子沉迷于玩电子游戏。

He obsesses over every word she says.

他Obsesses over她所说每一句话。

She obsesses over every detail of her appearance.

她对自己外貌的每一个细节都过分关注。

The teenager obsesses over social media all day long.

这个青少年整天Obsesses over社交媒体。