trier
/traɪə(r)/noun
1
- a person who always makes an effort, however unsuccessful they may be（无论怎样失败仍）一贯努力的人：
Kelly was described by her teachers as a real trier.
凯利被老师说成是一个真正百折不挠的学生。
2
- a person or body responsible for investigating and deciding a case judicially审查员; 审查团：
the jury is the trier of fact.
陪审团是事实的审查员。