After they arrived, Dan took out a blank sheet of paper to calculate the expense.

他们到达之后，丹取出一张空白的纸来计算开支。

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A 13 year veteran of IBM, Dan Gisolfi holds a Masters Degree in Artificial Intelligence from Polytechnic University, and a BA in Computer Science from Manhanttanville College.

作为在 IBM 工作了 13 年的老员工，Dan Gisolfi 拥有 Polytechnic 大学的人工智能硕士学位和 Manhanttanville 大学计算机科学的学士学位。

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Dan has over 20 years of experience in research and commercial distributed computing ranging over transaction and object-oriented systems, programming languages, messaging, and database systems.

Dan在商业分布式计算技术的研究方面有20多年的经验，涉及的领域包括面向事务和对象的系统、编程语言、消息传递和数据库系统。

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