1·The first item in each tuple is a callable object (in this case a method pointer) and the second is a HTTP request type that the method should be called for.
每个元组的第一项是可调用对象（在这里是一个方法指针），第二项是 HTTP 请求类型，这种请求类型可以调用该方法。
2·Each tuple represents a pair of stock tickers and stock prices.
每个元组代表一对股票代码和股价。
3·The thing to notice about this wrapper is that each generator/coroutine yields a tuple that contains its intended branch destination.
关于这个包装器要注意的一点是，每个生成器／协同程序都会生成一个包含它的预期分支目标的元组。
4·Note that the elements of the tuple are indexed with 1 as the first value, instead of 0, which is common in most other languages.
注意，元组元素以1作为第一个值的索引，而不是像其他大多数语言中那样从0开始。
5·As you add more elements, creating a tuple structure becomes increasingly difficult.
随着您添加更多的元素，创建元组结构将变得越来越困难。