爱是一场久经不退的高烧
[ài shì yī chăng jiŭ jīng bù tuì de gāo shāo]
Love is like a persistent high fever which never seems to abate. It indicates that falling in love is like having a high fever that won’t get lower for a long time, suggesting passionate yet perhaps exhausting feelings, symbolizing the intensity of falling madly in love.