The U.S. never ratified the pact because it doesn't impose binding commitments on China and other emerging economies.

美国从未认可这个条约，因为美国不会将约束性承诺强加给中国及其他新兴经济体。

Mr Read's promises are just a starting point for negotiations, says Vince Cable, the business secretary, who wants more binding commitments.

商务大臣文斯·凯博想得到更多有约束力的承诺，他表示，雷德的承诺不过是谈判的起点。