Hit and... - Miss. Hit and miss.

Hit 和… … - Miss，碰运气。

In and out, up and down, hit and miss.

进进出出，上上下下，碰运气、没个准。

The strikes seem to be largely hit and miss.

这种攻击更像是在碰运气。

So something is hit and miss, you can't rely on it right?

某件事情时好时坏，所以你不能相信它，对吧？

The coffee at my local cafe is a bit hit and miss.

我那儿咖啡馆的咖啡有点时好时坏。

Making successful investments for me over the years has always been hit and miss.

多年来，对我来说，成功的投资一直都是碰运气的。

So you could say " I'm really sorry, my internet connection has been a bit hit and miss today."

“对不起，我的互联网连接今天有点时好时坏。”