您要找的是不是：
n. 抓子游戏；家伙；小伙子（jack的复数） ...
?称为雅可
通常我们把 J = dx / dy 称为雅可(Jacco)比。 例 1.4 设随机变量 Y 与随机变量 X 的关系为
艾里廷 ; 雅克·艾里廷
教练维尔哈伦
林德扬
Jacco Verhaeren, coach of Pieter van den Hoogenband, said the Australian's biggest attribute was his determination.
CNN: Titanic battle set for 100m final
He manages Plaza with his two sons, Jacco Reijtenbagh, a resident of New York, and Edgar Reijtenbagh.
FORBES: Magazine Article
Eventually his two sons, Jacco and Edgar, also got involved with the portfolio.
FORBES: Companies, People, Ideas
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