大型计算机；主机电脑

mainframe computers的用法和样例：

例句

A mainframe computer on which everyone in the office depended suddenly went down.办公室每个人都在用的大型计算机突然趴下了。
Despite a prestigious reputation in biology, Dawkins was experienced in programming mainframe computers.除了在生物学界享有盛誉，道金斯在大型计算机编程上也有丰富的经验。

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