Furthest west; the one that is more to the west than any other in the group. "The westernmost island of Japan" is the island of Japan that lies furthest west; "the westernmost point of Europe" is the piece of Europe you cannot go west of without leaving it.

Furthest west最西邊 the one that is more to the west than any other in the group指一群東西裡比其他都更靠西的那一個。'The westernmost island of Japan' is the island of Japan that lies furthest west'The westernmost island of Japan'就是日本群島裡位置最西的那座島 'the westernmost point of Europe' is the piece of Europe you cannot go west of without leaving it'the westernmost point of Europe'則是歐洲再往西走就會離開歐洲的那個點。

It is a superlative — it already means "the most west", so it names one thing (or one group of things) and normally takes *the*.

It is a superlative它是最高級 it already means 'the most west'本身就已經是'最西'的意思 so it names one thing (or one group of things)所以它指的是一個東西（或一群東西） and normally takes *the*前面通常會加the。

Where do you meet it? Geography books, travel writing, news, and museum signs. It is precise, slightly formal, and not something you would say while giving a friend directions; there you would just say "the one on the far west" or "the last one on the left".

Where do you meet it?你會在哪裡遇到它？Geography books, travel writing, news, and museum signs地理書、旅遊寫作、新聞、還有博物館的標示牌。It is precise, slightly formal它精確、有點正式 and not something you would say while giving a friend directions不是你幫朋友指路時會說的話 there you would just say 'the one on the far west' or 'the last one on the left'那時候你就直接說'the one on the far west'最西邊那個或'the last one on the left'最左邊那個。

Notice the *-most* ending — it turns a direction or a position into a superlative, and English has a whole set of them: *northernmost, southernmost, easternmost, innermost, outermost, uppermost, foremost, topmost*. Two spelling points worth having: it is built on *western*, not on *west*, so it is not "westmost"; and it is one word, with no hyphen.

Notice the *-most* ending注意這個-most字尾 it turns a direction or a position into a superlative它把一個方向或位置變成最高級 and English has a whole set of them英文有一整組這樣的字 *northernmost, southernmost, easternmost, innermost, outermost, uppermost, foremost, topmost*像northernmost最北的、southernmost最南的、easternmost最東的、innermost最內部的、outermost最外部的、uppermost最上面的、foremost最前面的、topmost最頂端的。Two spelling points worth having有兩個拼字重點值得記住 it is built on *western*, not on *west*它是建立在western上，不是west上 so it is not 'westmost'所以不是'westmost' and it is one word, with no hyphen而且是一個字，沒有連字號。