自从人类第一次被一颗杂草所绊倒时，他就需要被治疗。人们一直在寻找治疗疾病和治愈伤口的办法。
Ever since the first human stumbled across the first herb that aided in healing, humans have been on a quest to cure disease, and heal wounds.
我看到很多人被如何用MVVM和Silverlight的限制来实现所绊倒，Silverlight中要求所有的代码都是同步的。
I've seen a few people trip over how this can be implemented using both MVVM and the restriction by Silverlight that all code must be asynchronous.
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