名词

1. 大门口；门道；入口
A gateway is an entrance where there is a gate.

2. （通往更广阔地方的）通道，门户
A gateway to somewhere is a place which you go through because it leads you to a much larger place.

3. （取得进展或更大成功的）途径，手段
If something is a gateway to a job, career, or other activity, it gives you the opportunity to make progress or get further success in that activity.

4. 网关；网间连接设备
In computing, a gateway connects different computer networks so that information can be passed between them.

1. an entrance that can be closed by a gate