1、
Costa Rica becomes a signatory to the Buenos Aires copyright treaty.
1916年,哥斯达黎加成为布宜诺斯艾利斯版权条约的签字国之一.
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2、
Companies from signatory nations are committed to capping their greenhouse-gas emissions.
来自缔约国的企业必须降低温室气体排放量.
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