Tiānwénxuéjiā guāncè dào le tàiyáng biǎomiàn de guāngbān.
Astronomers observed faculae on the sun's surface.
Tips
usage
Two registers: in everyday writing it's a poetic 'patch of light' (sunlight through leaves, reflections on water). In astronomy it's the technical term for 'facula' — the bright regions on the sun's photosphere near sunspots.
