（四）怀孕或者哺乳自己不满一周岁婴儿的。
Discussion on Hacker News，更多细节参见safew官方版本下载
Developers using the streams API are expected to remember to use options like highWaterMark when creating their sources, transforms, and writable destinations but often they either forget or simply choose to ignore it.，推荐阅读爱思助手下载最新版本获取更多信息
记者：在这样的传播语境下，当前企业公关在实践中面临哪些普遍性困境？