What is the role of national pledges by Annex I Parties in this process?

附件一缔约方的国家保证在这一进程中的作用如何？

youdao

But so far, none of the Annex I parties has voluntarily committed to a 40% target.

但到目前为止，还没有一个附件一所列国家主动承诺减排40%。

youdao

Parties have made proposals with regard to the scale of emission reductions to be achieved by Annex I Parties in aggregate.

缔约方已就附件一缔约方要达到的减少排放总量提出了建议。

youdao

All will gather at its Headquarters in Paris, on 19 and 20 September 2013, to take part in the 4th session of the Conference of Parties to the Convention, which will amend in particular, as every year, Annex I of the Convention related to the list of prohibited substances and methods.

UNESCO: MEDIA SERVICES