彻底 + 的 + Noun / 彻底 + Verb
彻底 (chèdǐ) means "thorough," "complete," or "utter," describing an action or state that is carried out fully without anything left undone. It is commonly used with verbs to emphasize completeness, such as 彻底的改革 (thorough reform). It can function as an adjective before a noun or as an adverb before a verb.
这次改革非常彻底,旧的制度被完全废除了。
Zhè cì gǎigé fēicháng chèdǐ, jiù de zhìdù bèi wánquán fèichú le.
This reform was very thorough; the old system was completely abolished.
你应该彻底检查一下车子再上路。
Nǐ yīnggāi chèdǐ jiǎnchá yīxià chēzi zài shànglù.
You should thoroughly inspect the car before hitting the road.
经过彻底的清洁,房间焕然一新。
Jīngguò chèdǐ de qīngjié, fángjiān huànrán yī xīn.
After a thorough cleaning, the room looked completely refreshed.