"Jack"在英語中不一定是"傑克"
一、指人
All the workers want a pay increase, every man Jack of them.
全體工人無一例外地要求增加工資。（every man Jack 或every Jack one是“每個人”、“人人”的意思。）
Jack of all trades and master of none
萬事皆通而一無所長的人
a Jack on both sides
模棱兩可，兩面派
Jack at a pinch
臨時拉來幫忙的人
Jack among the maids
討好女人的男子
Jack in the water
碼頭打雜工
cheep Jack
賣廉價貨物的小販
a Jack in office
自命不凡的小官吏，官僚
Jack the lad
（青少年幫派中的）頭號人物
二、指物
His elder brother died of Yellow Jack in the West Indies.
（Yellow Jack指醫學上的“黃熱病”）
the Union Jack
英聯合王國國旗
a Jack of straw
稻草人
to make one's Jack
賺很多錢
三、諺語中指人或物
All work and no play makes Jack a dull boy.
只工作不玩，聰明的孩子也會變傻。
All shall be well, Jack shall have Jill.
有情人終成着屬。
Jack would be a gentleman if he had money.
低微的人有錢也會成爲紳士。
Jack is as good as his master.
夥計不比老闆差，卑賤者未必不如高貴者。
Jacks are common to all that will play.
樂器對於所有想要彈奏的人都一樣。（Jacks是古時類似鋼琴的彈奏樂器。）
