first major overhaul

基本解释

If you are considering a major room overhaul, first plan your colors on paper.
如果你在考慮主房間的裝脩，先在紙上寫出你的色彩計劃。
Atlantis was the first orbiter to undergo numerous modifications during a 10-month major overhaul in 1998.
亞特蘭蒂斯是第一個在航天飛機經過10個月的多次脩改，1998年大脩。

"The rule we will be publishing today represents the first major overhaul of the format and content or prescribing information in 25 years, " said Dr. Janet Woodcock, deputy commissioner for operations.
FORBES: Magazine Article
What we've alternately known as the "Tube" throughout much of its development cycle is the first production device to run S60 5th Edition -- the fourth major overhaul of Nokia's ubiquitous smartphone platform since 2002 and the first to support fingers, styli, and high-res displays.
ENGADGET: The Nokia 5800 XpressMusic Mobile