如果英国央行加息，英镑分别在短期和长期是会贬值还生值啊

few people define in your way

look at the reported exchange rate from all the bank, who use indirect way

by the way, answer your question

if you define your exchange rate in indirect way

one fundamental assumptions are no arbitrage

if there is arbitrage, it is not surprising to find 美元就会在短时间内出现升值

but anyway, it only happens in the short run, not long run.