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词根 oper
中文含义：工作；劳动；劳动；努力
English meaning: to work, labor
词源：Latin operor（to work, labor）
原始印欧词根：*h₃ep-（to work, toil, make）
oper 词族（14 个同根词）
- operation
- operate
- operator
- cooperate
- cooperation
- operational
- operative
- cooperative
- inoperable
- uncooperative
- operand
- operable
- inoperative
- operationally