assessor
/əˈsesə(r)/noun
1- a person who assesses someone or something, in particular评估人, 尤指：
1.1
- a person who judges the quality of performance, typically in an exam or coursework（考试、作业等的）评判人, 评阅人。
1.2
- a person who calculates or estimates an amount to be paid or what something is worth, chiefly for tax or insurance purposes（主要为计算税额或保险金额的）估算师; 估税员; 精算师。
1.3
- a person who is knowledgeable in a particular field and is called upon for advice, typically by a judge or committee of inquiry（法官或调查委员会约请的）专业顾问。
词源
late Middle English: from Old French assessour, from Latin assessor 'assistant judge' （in medieval Latin 'assessor of taxes'）， from Latin assidere （see ASSESS）.