can anyone help me?
Dyer pointed at a red-and-white sign nailed to a blackened timber. In her lifetime, Elizabeth had seen a thousand of them just like it. It was a metal square: two words, simple.
what does red-and-white sign mean?
what does It was a metal square: two words, simple mean?

Question

can anyone help me?
Dyer pointed at a red-and-white sign nailed to a blackened timber. In her lifetime, Elizabeth had seen a thousand of them just like it. It was a metal square: two words, simple.
what does red-and-white sign mean? 
what does It was a metal square: two words, simple mean?

Answer

That kind of signs forbid something or restrict it.

Answer

The author is describing this sign:
https://www.safetysign.com/images/source/large-images/F5945.png

It is red and white.  It says "no trespassing." Since Adrian didn't own the land anymore, he was arrested for trespassing.

Answer

of course

Nie przegap okazji, by nauczyć się języka w zaciszu własnego domu. Przejrzyj naszą ofertę doświadczonych korepetytorów i zapisz się na pierwszą lekcję już teraz!