这件户外夹克的设计注重功能性，能在恶劣天气下保持你的干爽和温暖。

This outdoor jacket is designed to be ___functional, keeping you dry and warm in harsh weather.

这款新智能手机受到赞誉，不仅因为外观，更因其高度的功能性和用户友好性。

The new smartphone is praised not just for its looks, but for being highly ___functional and user-friendly.

这套公寓的家具现代、简约，且纯粹以实用为目的。

The apartment's furniture is modern, minimalist, and purely ___functional.