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Machine hall consists of two tiers: on the upper one there are generators and turbines, on the lower - pumps and pipelines. It is quite hot in the hall and rather noisy.

机械大厅由两层组成：上一层是发电机和汽轮机，下层是泵和管道。大厅内异常闷热嘈杂。

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The upper part of the hall was now completely dark.

接着大厅上半部分完全黑下来。

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Then the university decided to open three upper-deck sections to Seton Hall students.

WSJ: Seton Hall vs. Syracuse: An Open Hall With an Orange Twist

Marvell will also be demonstrating the its education solutions at the 2012 Consumer Electronics Show (CES) in its booth, No. 30542, located in South Hall 3 on the upper level.

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Upper Saddle River, NJ: Prentice Hall.

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