李约瑟

Joseph Needham (1900-1995), British biochemist and author of Science and Civilization in China

plum

to weigh in a balance or on a scale

to make an appointment / to invite / approximately / pact / treaty / to economize / to restrict / to reduce (a fraction) / concise

Joseph (name)

a type of standing harp, smaller than konghou 箜篌, with 5-25 strings