Along the way, open air spaces draw in air for natural ventilation.
沿着这个斜梯，露天空间可以吸收新鲜的空气实现自然通风。
This would solve the problem of ventilation, for if a train entered this tunnel, it would draw in fresh air behind it.
因为如果有列火车开进隧道，它就把新鲜空气随之抽进了隧道。
This would solve the problem of ventilation, for if a train entered this tunnel, it would draw in fresh air behind it.
这样就解决了通风问题，因为如果有一列火车开进隧道，它就把新鲜空气随之抽进了隧道。
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