A cop pulls over a car load  of  nuns....

Cop: "Sister, this is a 65 MPH highway -- why are you going so slow?"

Sister: "Sir, I saw a lot of signs that said 22, not 65."

Cop: "Oh sister, that's not the speed  limit, that's the name of the highway you're on!"

Sister: "Oh! Silly me! Thanks for letting me know. I'll be more careful."

At this point the cop looks in the backseat where the other nuns are shaking  and  trembling.

Cop: "Excuse me, Sister, what's wrong with your friends back there? They're shaking something terrible."

Sister: "Oh, we just got off of highway 119."

Key  words：

load  of　載滿

MPH　每小時多少哩（1哩 = 1.609344 公里（Kilometers）

speed  limit　速限

highway　（n.）公路　　高速公路：freeway

cop　（n.）警察

backseat　（n.）後座

shaking  and  trembling　顫抖個不停