A company that sells things often sells the same kind of thing at several prices — a cheap model, a middle model, an expensive model. That whole set is the 'range'. Top-of-the-range means the most expensive, best-equipped model in that set: 'a top-of-the-range washing machine', 'the top-of-the-range model costs twice as much'.

sells things賣東西的 A company公司 often常常 at several prices用好幾種價格 sells the same kind of thing賣同一類東西——a cheap model便宜的型號、a middle model中間的型號、an expensive model貴的型號。That whole set那一整組 is就是 the 'range'。Top-of-the-range means指的是 in that set那一組裡 the most expensive最貴、best-equipped配備最好的 model型號：'a top-of-the-range washing machine'頂級款洗衣機、'the top-of-the-range model costs twice as much'頂級款要價兩倍。

So it is not simply praise like 'top-notch'. It tells you where something sits among its brothers and sisters from the same maker. A top-of-the-range car from a cheap brand may still be worse than a basic car from an expensive brand — the phrase compares inside one product line, not across the whole world.

So所以 it它 is not simply不只是 like 'top-notch'像 'top-notch' 那樣的 praise稱讚。It tells you它告訴你 something一樣東西 from the same maker在同一家廠商 among its brothers and sisters的兄弟姊妹之間 where sits排在哪個位置。from a cheap brand便宜品牌的 A top-of-the-range car頂級款車 may still可能仍然 than a basic car from an expensive brand比貴品牌的基本款 be worse還要差——the phrase這個說法 compares比的是 inside one product line同一條產品線裡面，not across the whole world不是全世界放在一起比。

It is used mostly for machines and goods you buy: cars, phones, cameras, kitchen equipment, bicycles. It is British; Americans usually say 'top-of-the-line'. Both are ordinary, everyday words used in shops and adverts.

It它 is used mostly大多用 for machines在機器 and goods you buy和你會買的商品上：cars汽車、phones手機、cameras相機、kitchen equipment廚房設備、bicycles自行車。It它 is British是英式說法；Americans美國人 usually say通常說 'top-of-the-line'。Both兩個都 are ordinary, everyday words是平常的日常用詞，used in shops and adverts商店和廣告裡都在用。

Write it with hyphens before a noun ('a top-of-the-range camera'); after 'be', people often drop them ('this model is top of the range').

before a noun放在名詞前時 Write it with hyphens要加連字號寫（'a top-of-the-range camera'）；after 'be'在 be 動詞後面，people often drop them人們常把連字號拿掉（'this model is top of the range'）。