familiar
very well known to one due to having heard, seen, felt, sensed, etc. them before

熟悉的, 亲切的

[形容词]
economic
relating to the production, distribution, and management of wealth and resources within a society or country

经济的, 与经济相关的

[形容词]
complicated
involving many different parts or elements that make something difficult to understand or deal with

复杂的, 困难的

[形容词]

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