Then we explored scala 's enhancements to looping constructs and conditional expressions .

然后，我们探索了scala增强的循环结构和条件表达式。

Scala extends the type system of java with more flexible generics and a number of more advanced typing constructs .

scala扩展了java的类型系统，同时提供了更灵活的类型和一些高级的类型结构。

Managing the mutable state is all the more difficult when multiple threads are involved . Clojure provides special constructs to support these cases safely .

多线程介入后，对于上述可变状态的管理变得更加困难，而clojure提供了特殊结构来安全地处理这些情况。

If a language supports continuations , the programmer can add control constructs like exceptions , backtracking , threads and generators .

如果一种语言支持后续（continuation）的话，编程者就可以添加诸如异常、回溯、线程以及构造函数一类的控制构造。

The question at hand is how one constructs such a life .

手上的问题是怎么去构建一份如此的生活。