妳的這個問題，類似於：
As is known to us all, the earth goes around the sun.
正如我們大家都知道的那樣，地球繞著太陽轉。
As 引導非限制性定語從句，為關系代詞，指代後面整句話的內容。
As it is known to us all, I don't want to repeat it.
由於這個我們大家都知道，我不想再說了。
As 為從屬連詞，引導原因狀語從句。it指前面說起過的那件事情。意為：由於。。。
1.If, as seems likely, the IMF agrees a loan to Hungary, it will follow emergency lending from the European Central Bank.
如果像看似可能的那樣，IMF同意向匈牙利提供貸款，它將跟隨在歐洲央行的緊急貸款之後。
However, unlike Content-Types and subtypes, the creation of new Content-Transfer-Encoding values is explicitly and strongly discouraged, as it seems likely to hinder interoperability with little potential benefit.
有it的用法例句很少，我很不容易找到壹個。專業性很強的句子。