gōng / chǎng / de / tàn / pái / fàng / liàng / bì / xū / kòng / zhì / zài / guó / jiā / biāo / zhǔn / yǐ / nèi / .

工厂的碳排放量必须控制在国家标准以内。

Factory carbon emissions must be kept within national standards.