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罗斯特霍恩
1、drawstring bag───拉绳袋；n.束口包，布索绳袋
1、There is one special situation, however, in which a product owner may need to provide his or her own effort estimates in a planning poker session. Dan Rawsthorne points out.───然而有一种特殊情况，产品负责人可能需要提供自己的工作量估算。