我们的目标是让它看起来/像同步版本行为。乔恩斯基特做了伟大的工作，在他的Eduasync系列解释这一点，特别是这篇文章：

The goal is to make it look/act like the synchronous version. Jon Skeet does a great job explaining this in his Eduasync series, specifically this post:

http://$c$cblog.jonskeet.uk/2011/06/22/eduasync-part-11-more-sophisticated-but-lossy-exception-handling/