她患有联觉症，每次听到钢琴声就会看到蓝色的波浪。

She has ___synaesthesia, so every time she hears piano music, she sees blue waves.

作家运用通感手法，将咖啡的香气描绘成'深棕色且带着甜味'。

The writer used ___synaesthesia to describe the coffee's aroma as 'deep brown and sweet'.