since when

基本解釋

Sounds fun. A Hindu festival? Since when have you started believing in Hinduism? Did I miss something?
聽上去蠻有意思。印度教節(jié)日？你什么時候開始信奉印度教了？你有什么沒有告訴我嗎？
But avoiding this direct liability may be of little help for the banking industry as a whole, since when SIVs cannot get funding, they are forced to sell assets.
但是銀行業(yè)作為整體來講，避免了這類直接責(zé)任并沒有多少幫助，這是因為當(dāng)SIV不能找到資金時，就會被迫出售資產(chǎn)。
The fall in sterling will also blunt deflationary pressures that might otherwise exacerbate the credit crisis, since when prices start falling the burden of debt rises in real terms.
英鎊的貶值也將減弱通貨緊縮的壓力，不然此壓力有可能加劇信用危機，因為當(dāng)價格開始下降時，按實值計算的債務(wù)負擔(dān)則會增加。

And since when do vampires like baseball? Well, it's the American pastime, and there's a thunderstorm coming.
And we're actually going to get a little bit deeper in our clicker questions here, since when you do your problem-set it won't be quite this straight forward that you'll be answering this kind of question, but actually you'll be thinking about how many different orbitals can have certain state functions or certain orbital names.
事實上我們要講的,比這個問題還要深一些，因為當(dāng)你們做習(xí)題集的時候,你們不會遇到這么明顯的問題，而是要考慮有多少個軌道,有某種特定的態(tài)函數(shù),或者特定的軌道名字。
麻省理工公開課 - 化學(xué)原理課程節(jié)選
Flanders, since when do you like anything cool?
弗蘭德，你什么時候也開始趕時髦了？
耶魯公開課 - 公正課程節(jié)選

Since when were the Little Ice Age and the Black Death the Good Old Days?
FORBES: The Black Death: Longing For The Good Old Days

used angrily in speech to ask someone why they believe a situation to be different from how it really is