出入口的英文：
gateway

• She saw me to the gate and said goodbye.
  她把我送到出入口，说了声再见。
• A triangular opening faced towards the bows of the ship, so that the insider commanded a complete view forward
  朝船头那面开有一个三角形的出入口，因此，在里边的人可以一览无遗地凭眺前面的景色。

• The network has a gateway into the hospital mainframe.
  该网络有一个网关连接医院主机。
• "Washington, gateway to the south "
  华盛顿---通往南方的门户
• It is an important trade port and a gateway of overseas Chinese.
  它是对外贸易和华侨出入的重要港口。
• A gateway splices together two different kinds of protocols .
  网关可拼接两种不同的协议。
• It will serve as a new gateway for the southern part to China.
  该机场将成为中国南方的新门户。