achiever
US
UK achiever n: (successful person)
SC 成功者 chéng gōng zhě
SC 成功的人 chéng gōng zhě，chéng gōng de rén
SC 获得成功的人 chéng gōng zhě，huò dé chéng gōng de rén
George is an achiever; he works hard to reach his goals.
high achiever n: (successful person)
SC 取得杰出成就的人
low achiever n: (unsuccessful person)
SC 成绩差的人
SC 没什么成就的人
Stuart was a low achiever when he was at school.
underachiever, under-achiever n: ([sb] who performs poorly)
SC （学习）成绩不良者 xué xí chéng jì bù liáng zhě
SC 未能充分发挥（学习）潜能者 xué xí chéng jì bù liáng zhě，wèi néng chōng fèn fā huī xué xí qián néng zhě
Teresa was an underachiever at college and left with very poor grades.