We cure our concrete with CO2, and we get that CO2 by capturing waste gas from industrial facilities like ammonia plants or ethanol plants that otherwise would've been released into the atmosphere.

我们用 CO2 固化我们的混凝土，我们通过捕获氨厂或乙醇厂等工业设施产生的废气来获取 CO2， 否则这些废气会被释放到大气中。

It could even start invisibly, with gas wafting through the air, if Russia decided to stage an accident at an ammonia plant in this area, and then send in troops under the guise of bringing it under control.

如果俄罗斯决定在这一地区的一家氨气工厂制造事故，然后以控制事态的名义派遣军队，那么入侵甚至可以在不可见的情况下开始，通过空气中飘出天然气。