皮筋

rubber band

pí = pi + Ø2

surname Pi

pí = pi + Ø2

leather / skin / fur / CL:張|张[zhang1] / pico- (one trillionth) / naughty

jīn = ji + (e)n1

muscle / tendon / veins visible under the skin / sth resembling tendons or veins (e.g. fiber in a vegetable)

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