Weird Butterfly Ceremony

課文：

“Gentlemen, start your engines!” These famous words start races like the Indianapolis 500 and Daytona 500 where the best drivers race the fastest cars. But racing isn’t limited to professional racers who drive almost 200 miles per hour. Adults and children interested in the adrenaline rush of motorsports racing can drive a go-kart. In fact, many professional racers got their start driving go-karts. Racing go-karts, or karting, has become popular worldwide. In the past 50 years, an estimated 1.6 billion people worldwide have enjoyed some form of karting.

start your engines：（= get ready to do something）
professional：專業的、職業的
profession：職業
adrenaline：腎上腺素
rush of：激增、大量
adrenaline rush：（= doing something very enjoy）
go-kart：卡丁車、小型賽車
go-karting：微型單座汽車競賽
estimated：預估的
estimate：估計 估價、估量

In the late 1950s, Art Ingels built the first go-kart in California. Taking some metal tubes from his day job, building race cars, Ingels joined them together and added wheels and a small engine. People got excited about the kart and began building their own. The first karting championship race was held in 1964. Now there are competitive races held all over the world. Last April, 18 countries sent their best young racers to Austria to compete in the Red Bull Kart Fight World Final.

day job：正職
championship：冠軍賽、錦標賽、冠軍頭銜
champion：冠軍
competitive：競賽的、競賽的、競爭激烈的、具有競爭力的

文法：
… be not limited to …（…不限於…）

特別補充：
brainstorm：集體研討、靈機一動、突然精神錯亂
amateur：業餘的
palindrome：迴文
Norma is as selfless as I am, Ron.
A man, a plan, a canal：Panama!