The existence of the U.S. is reckoned from the Declaration of Independence.美国立国是从发表《独立宣言》之日算起的。Anti-miscegenation laws prohibiting interracial sex and marriage predate the Declaration of Independence by more than a century.在独立宣言发表一个世纪前,就有反异族性关系和通婚的法律。He was one of the signers of the Declaration of Independence.他是《独立宣言》的签署人之一。