1. This is allowing the Rx project to finally build observables directly from Task. 这使得Rx项目最终可以直接从Task构建Observable。
2. Since these two parameters are passed in, an observer is able to observe any number of observables. 因为这两个参数是传递进来的，所以观察者可以观察多个目标。
3. This paper presents a concept of antenna phase center. Effects of antenna center movement on GPS observables are studied. 阐述了天线相位中心的基本概念，定量研究了天线相位中心移动对GPS观测量的影响。
4. Such a request-cancel-new-request sequence is difficult to implement with Promises. It's easy with Observables as we'll see. 像这样一个请求-取消-新请求的序列用承诺是很难实现的，但接下来我们会看到，它对于可观察对象却很简单。
5. In addition to the conversions between tasks and observables, Reactive Extensions will also directly support the await keyword. 除了任务和Observable之间的转换，Reactive Extensions还将直接支持await关键字。
