血液 xuèyè blood
blood; (figuratively) lifeblood
How to remember 血液: 血 blood + 液 fluid = blood.
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How it is used
- Blood as a substance (technical/formal) - 血液循环 (xuèyè xúnhuán) blood circulation.
- 液 (fluid) makes it the clinical noun; everyday 'blood' (a cut, bleeding) is just 血 (xiě/xuè).
- Figuratively the lifeblood: 新鲜血液 (xīnxiān xuèyè) fresh blood / new talent.