gateway
英 [ˈɡeɪtweɪ]   美 [ˈɡeɪtweɪ]  
n.
大门口;门道;出入口;(通往其他地区的)门户;途径;方法;手段;网关

例句

They turned through the gateway on the left.

他们穿过出入口向左转去。

A good education is the gateway to success.

良好的教育是通往成功之路。

He walked across the park and through a gateway.

他穿过公园，走过一道大门。