they spend hours looking at the best price at the item they want为_英语解答

they spend hours looking at the best price at the item they want
为什么是at the item they want而不用for the item they want

人气：304 ℃　时间：2019-10-23 03:02:14

解答

For 暗含了目的之意,at 并无具体的意思.