"特别创造说" can be translated into English as "the theory of special creation" or "special creationism".
"The theory of special creation" emphasizes it as a theoretical concept or hypothesis.
"Special creationism" is a more specific term often used in discussions about religious or philosophical beliefs regarding the origin of species, suggesting a direct, purposeful act of creation by a divine being.
Both translations are acceptable, depending on the context and intended nuance.