从众多产品中仅选择几个杰作是一件富有挑战的事情。
Selecting just a few masterpieces from all the possibilities was also challenging. I used the following selection criteria.
调整架构可能是一项富有挑战的任务，需要预计系统整体工作负载方面的知识。
Sizing the architecture can be a challenging task requiring knowledge of expected system overall workload.
当然这是富有挑战的工作，但同时还是要大量参与的、有价值的，并令人满意的。
Certainly this is challenging work, but it is also tremendously involving, valuable, and satisfying.
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