四肢 sìzhī the four limbs of the body
How to remember 四肢: 四 four + 肢 limbs = the four limbs of the body.
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How it is used
- The four limbs - 四肢无力 (sìzhī wúlì) limbs feeling weak; 四肢发达 (sìzhī fādá) well-built limbs (sometimes jokingly '四肢发达,头脑简单' brawn but no brains).
- Anatomical collective term for arms and legs. Neutral/formal.