In order to realize safety production in coal mine, ventilation system must be set up.

为了实现煤矿安全生产，各矿必须建立稳定的矿井通风系统。

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Be sure to have a proper ventilation system or simply open up a window.

确保房间有通风系统，要么就把窗子打开。

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Set up system to provide a "cross flow" of intake and exhaust ventilation wherever possible.

在任何可能的地方建立通风系统用以保证进风和排风的的交叉流动。

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Set up system to provide a "cross flow" of intake and exhaust ventilation wherever possible.

在任何可能的地方建立通风系统用以保证进风和排风的的交叉流动。

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