And natural surroundings don't mean an environment in the wild. They're called "domestic" fowl and livestock because they live with man, "and simulating the surroundings in which they were once raised isn't very possible, practically speaking." Dr. Wu says. "In fact, sometimes those surroundings actually blur their special characteristics and make them less like the way they should be."
而自然的環境，並非原始環境，我們說「家」畜「家」禽，就因為它們一直和人們生活在一起，「而模擬早期的飼養環境，不僅實際上不太可能，有時這些環境反而使它的特性，逐漸模糊，越來越不像它們自己」，吳明哲說。