공무원필수종합반 교재 original120책이구요

잘모르는부분이있어서요

4번 3번째줄

the originally brilliant colors of these(paintings) have faded, and many of them are decaying but when first discovered, such at least as had not been exposed to the influence of the atmosphere, their colors were as bright and pure as when they were fisrst painted

첫째는 such가 어떻게 나온건질 모르겠어요

명사랑 호응도아니고 such as 구조도아니고

그나마 짐작되는게 such A as B 와 비슷해보이는데 이 구조는 a b에 보통 명사가와서 또아닌거같고..

그리고 둘째는 as도 양태접속사같은데 왜 주어가없는지모르겠어요

주어가 생략됬으면 be동사랑 같이생략되서 as exposed to~로 나와야되지않아요?..

한문장에 어려운게 두개있으니까 답답하네요..