smokestack

Thick black smoke billowed from the factory's primary smokestack, triggering an air quality alert.

(Chinese) 工厂的主烟囱冒出滚滚黑烟，触发了空气质量警报。

From the distance, we could see the towering smokestacks of the industrial district against the sunset.

(Chinese) 从远处，我们可以看到工业区高耸的烟囱映衬着落日。