I can buy some verified carbon units and get closer to my carbon negative pledge.

我可以购买一些经过验证的碳单位， 并更接近我的负碳承诺。

Behind every carbon neutral or carbon negative pledge, there's some math that companies can continue polluting as long as they're offsetting it somewhere else.

在每个碳中和或碳负承诺的背后，都有一些数学公式表明， 只要公司在其他地方抵消污染， 它们就可以继续污染。