gēn / jù / zhè / xiē / xiàn / suǒ / jǐng / fāng / tuī / zhī / xián / yí / rén / yǐ / jīng / lí / kāi / le / zhè / zuò / chéng / shì

根据这些线索，警方推知嫌疑人已经离开了这座城市。

Based on these clues, the police inferred that the suspect had already left the city.