The chimneys were built of stones and turf, and the roofs were thatched with grass.

烟囱的材料用的是石头和泥炭屋顶则用茅草覆盖。

youdao

The tunnel would be well-ventilated (9) tall chimneys were built (10) sea level.

只需建造些高出海面的高高的烟囱，该隧道便会通风良好。

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The tunnel would be well-ventilated if tall chimneys were built above sea level.

如果再建些伸出海面的高大的烟囱状通风管，隧道就具备了良好的通风条件。

youdao

And they found it at Ten Chimneys, the home Lunt built almost room by room in Genesee Depot in southeastern Wisconsin, where he grew up.

NPR: The 'Fabulous Lunts,' Alive at Ten Chimneys