dumb terminal
哑终端   

例句：
In the days of mainframe computers, networks were simply the wires that connected the dumb terminals to the big box in the basement.
在大型计算机时代，网络不过是把哑终端连到地下室里的大盒子上的电线而已。

come out of one's shell
不再害羞
 
例句：

We finally got Frank to come out of his shell and talk to some people at the party.
我们终于使弗兰克不再害羞而且使他在舞会上和别人交谈起来。

What a coincidence!
真是太巧了。

对话：
A: Hi, Jack, nice meeting you here. Where are you going?
B: I' m going to New York, and my plane takes off at 10:30.
A: What a coincidence! We are on the same plane.
B: Are you? So, we can keep each other company.
　　　　　　　　 　　　　　　　　 　　
A：嗨，杰克。很高兴在这儿碰到你。你要去哪儿？
B：去纽约，我的飞机10:30起飞。
A：真是太巧了！我们乘同一架飞机。
B：是吗？那么，我们可以做伴了。