A gateway is a part of a message bus or service bus which provides boundary functions which apply to all incoming messages and are not format dependent.
网关是消息总线或服务总线的一部分，提供应用到所有传入消息且不依赖于格式的边界功能。
2
The river which forms the eastern boundary of our farm has always played an important part in our lives.
形成我们农场东部边界的一条河流一直在我们生活中发挥着重要作用。
3
This area has winding and complicate boundary and some part is merely 1 kilometer's width.