Simultaneously, some rather instable rock masses were formed in some parts of the upstream and downstream side-walls of the main machine hall.

同时，在厂房上下游边墙的局部地段形成比较严重的不稳定岩体。

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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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He was a product of New York's Democratic machine, Tammany Hall, with no particular expertise in financial matters.

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The hours of killing time before riding over to the hall, the putrid vending-machine meals on the run, the way-too-early-in-the-morning vans to the airport -- the dreary parts all become more than worth it when, for an hour or so, the singers can once again personally deliver a bit of happiness to the audiences who still adore their music.

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