personal best record人最好成绩;个人最好成绩
record a personal best创下个人最佳成绩
Fuzzy personal best value模糊个体极值
Your Personal Best Workout最佳的身体练习
infeasible personal best不可行历史最优
Be Your Personal Best做最好的自己;胡子拉碴;梧桐雨;东清人
Be My Personal Best一只特立独行的猪
achieve their personal best取得最佳成绩
N-COUNT（可数名词） An athlete's personal best is the highest score or fastest time that they have ever achieved. 个人最佳成绩 [usu sing]
She ran a personal best of 13.01 sec.
她跑出了13.01秒的个人最佳成绩。