the two biggest opponents of the kyoto protocol are the two countries who have refused to ratify the agreement even though they both signed the treaty on climate change amendment
反对《京都议定书》的两个最大的国家是两国，尽管它们都签署了气候变化修正案，但仍拒绝批准该协议
以上为机器翻译结果，长、整句建议使用 人工翻译 。