Tā shuāi le yì jiāo, xīgài shàng liú xià le yūshāng.
She fell and left a bruise on her knee.
Tips
memory
瘀 means stagnant/congealed blood — a vivid image for what a bruise actually is. The same character appears in 瘀血 (stasis of blood), a core concept in traditional Chinese medicine.