这表现出重大的人员供给难题：系统分析师如何在支持前面演进中所涉及的开发人员和测试人员的同时书写用例？
This presented significant staffing challenges: How could system analysts write use cases while supporting developers and testers involved in previous evolutions?
它们的难题是如何重新组合这些黑色的粉末，使它成为有足够硬度的书写工具。
Their problem was to bind the black powder together again so it would be hard enough to serve as a writing instrument.
汉字由纵向书写改为横写形式之后，为汉字的连写提出不小的难题，尤其是行书的书写，横连方式成为书法表达值得探讨的问题。
After the transformation from longitudinal writing to transverse writing, there was a very big problem of Chinese characters' stroke connection, especially the writing of Running Script.
汉字由纵向书写改为横写形式之后，为汉字的连写提出不小的难题，尤其是行书的书写，横连方式成为书法表达值得探讨的问题。
After the transformation from longitudinal writing to transverse writing, there was a very big problem of Chinese characters' stroke connection, especially the writing of Running Script.
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