We had put too much carbon in the soil in the form of compost. It broke down; it took oxygen out of the air; it put CO2 into the air; and it went into the concrete. Pretty straightforward really.
Мы поместили слишком много углерода в почву в качестве удобрения Он разложился, забрал кислород из воздуха, отдал СО2 в воздух; и он ушёл в бетон.