They arrived at a decision. (1)

They arrived at the station.(2)

（1）和（2）句中的红色部分都是在语法上做状语吗？介词动词arrived at是依逻辑意义判定为介词动词的吗？谢谢回答。

(1)arrive at 作出(决定)

if the jury cannot arrive at a unanimous decision.  

如果陪审团不能作出一致判决

These figures are arrived at on the basis of dentists' receipts for 1991-1992. 

这些数字是根据1991至1992年间的牙医收据统计得出的。

(2)arrive at到达，抵达

Media representatives should arrive at the Press Centre by 11:40 to obtain accreditation. 

媒体代表应在11：40之前抵达新闻中心进行报到确认。