back to back connection

基本解释

The best way to solve this problem is to work back from main connection.
解决此问题的最好办法从主要连接开始查起。
First, in order for the notifications to come back, the connection to the service must be maintained.
首先，为了在回来的通知，对服务的连接必须得到维持。
Here you switch back to the other connection and create a prepared statement with a specific, hard-coded SQL statement, and then execute it.
在这里，您可以切换回到另一个连接，并使用特定的、硬编码 SQL 语句创建一个准备好的语句，然后执行它。

And Meltzoff finds that babies more often than not stick their tongues out back, suggesting some sort of social connection from one person to another, and then later on babies are mimics.
迈尔左夫发现,婴儿往往会把舌头伸出来再缩回去,表明了人与人之间的某种社会联系,也说明了婴儿是模仿者
耶鲁公开课 - 心理学导论课程节选
So, we had a pretty good connection to the BBS systems, the bulletin board systems, back then.
所以我们有一个很好的BBC网络系统，就是电子布告栏系统。
斯坦福公开课 - Twitter之父Jack.Dorsey演讲：好奇和灵感的力量课程节选

Satellite, surprisingly, came out as having the best throughput although before you rush out to get satellite service remember that the roundtrip latency (the time it takes a data packet to go from your PC to its destination and for an acknowledgement to come back) over a satellite connection is often in the range of 900 milliseconds to 1, 400 milliseconds.
FORBES: FCC Broadband Performance Report Shows Improvement But Misses Big Picture
Group video chats bring back the connection to the reader and encourage interaction.
FORBES: How Skype's Group Video Calling Could Help Publishers