机枪座的英文：
rail socket

rail是什么意思：
n. 铁轨；横杆，扶手；抱怨，痛斥

To supply or enclose with rails or a rail.
用栏杆围提供栏杆或把栏杆围起来

The coal will be shipped by rail.
这些煤将用火车装运。

Trains run on rails.
火车在轨道上行驶。

Hold on to the rail or you'll slip!
抓住扶手，不然你会滑倒的。

Rust has corroded the steel rails.
锈侵蚀了钢轨。

socket是什么意思：
n. 插座；插口，插孔；窝，穴；眼窝，孔窝；牙槽

eye socket | orbit
眼眶| 眼窝

An operation was attempted on something that is not a socket.
在一个非套接字上尝试了一个操作。

A socket operation was attempted to an unreachable network.
向一个无法连接的网络尝试了一个套接字操作。

A socket operation was attempted to an unreachable host.
套接字操作尝试一个无法连接的主机。

He bent down to disconnect the plug from the socket.
他弯下腰，把插头从插座里拔出来。