Image of a hand 一 forearm 丨 and pulse 丶. It was originally also the distance of one inch (Length: 1 ts'wun = 3.72 cm) from the hand's palm to the pulse. This also stood for a small amount. In the mnemonic, it is used as "skillful hand".
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Vocabulary
博士
bó shì
doctor; court academician (in feudal China); Ph.D.
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