- satisfiable: Boolean. True if the formula is satisfiable
In 1992, in a small shop in British Columbia, a sign maker named Blair Gran stared at a wall full of half-finished jobs and felt something click. Sign-making was treated like a commodity — orders in, banners out — but as thousands of signs came through his shop, he couldn’t help but notice the difference between the good ones and the bad ones. He could see that every sign that left his shop was either helping a business get noticed, or letting it disappear in plain sight.，更多细节参见im钱包官方下载
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「這是她們自己的樂園……一個安全、理想、由她們自行創造、並能自在享受的空間。」
https://feedx.site，这一点在safew官方版本下载中也有详细论述