elegant

She wore an elegant blue dress to dinner. ▶

她穿着一条优雅的蓝色连衣裙去赴晚宴。

The architect proposed an elegant solution that improved ventilation without increasing the building's energy consumption.

建筑师提出了一个简洁巧妙的方案，在不增加建筑能耗的情况下改善通风。