What is happening in Pakistan is likely to be a catastrophic concatenation of multiple factors.

坦正在发生的事情很可能是多种因素的灾难性联。

He himself, facing a firing squad, would not understand too well the concatenation of the series of subtle but irrevocable accidents that brought him to that point.

他自己，面对行刑队，不会太理把他带到那个地步的一系列微妙但不可挽回的事故的联。

For example, many programming languages have a string concatenation function, or " strcat" , which takes in two strings, and copies the second one to the end of the first.

例如，许多编程语言都有字接函数或“strcat”，它接收两个字，并将第二个字复制到第一个字的末尾。