一座座高大的烟囱冒着烟。
这是一个由机器和高大的烟囱组成的城镇，从烟囱里冒出的烟永远、永远地蔓延着。
It was a town of machinery and tall chimneys, out of which smoke trailed themselves for ever and ever.
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。
The tunnel would be well-ventilated if tall chimneys were built above sea level.
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