他 用 刀叉 割 牛排。

He uses a knife and fork to cut the steak.

刀叉 是 用 來 吃飯 的 工具。

Knives and forks are utensils used for eating.

她 不 習慣 用 刀叉 吃飯。

She is not used to eating with a knife and fork.