One way to hold this phrase: it simply means the mark that stands for a pound. The trouble is that English has two different pounds — the British money and the unit of weight — so the phrase has two different marks to point at. Picture a price tag on one side and a bag on a scale on the other; the name is the same, and the country of the speaker tells you which one to see.
可以想成：這兩個字的字面就是「代表 pound 的記號」。麻煩的是英文裡有兩個 pound——英國的錢，和重量的磅。所以同一個名字有兩個記號可以指。一邊的畫面是價格標籤，另一邊是磅秤上的袋子。名字一樣，是說話的人在哪一國決定你該看到哪一個。
登入就可以看每一支怎麼連回核心畫面。