at the entrance of at the entrance to区别何在?

at the entrance of the zoo：在动物园的入口处
at the entrance of the hotel：在旅店的入口处
The visitors lined up at the entrance of the exhibition.
参加者在展览会入口处排队.
at the entrance to sp：在某地的入口处
He picked up two hitchhiker s at the entrance to the motorway .
在高速公路入口,他让两个免费搭车旅行者搭了他的车.
At the entrance to the driveway were large iron gates.
在车道的入口,有一些巨大的铁门.
A fleet was concentrated at the entrance to the harbour.
一支非常强大的舰队集结在海湾的入口处.
显然:
at the entrance to 离入口是有段距离了,较远,常用于规模较大的地方..

在。。。的入口
在通往。。。的入口
不一样的