例句與造句

1. Hi-a question for history of science people-can anyone tell me if there were any observations made by scientists on the phenomenon of protective colouration / camouflage before Thayer in the 19th century?
2. In some stories, such as " Babel-17 " ( 1966 ), same-sex love and same-sex intercourse are clearly implied but are given a kind of protective colouration because the protagonist is a woman who is involved in a three-person marriage with two men.
3. It's difficult to find protective colouration in a sentence. 用protective colouration造句挺難的