About 1 billion children, nearly half the world's 2.2 billion, live in 33 countries classified as "extremely high-risk" to the impacts of climate change, a report of UNICEF, the UN Children's Emergency Fund, says.

联合国儿童基金会的一份报告显示，在全球22亿儿童中，大约有近一半(约10亿儿童)生活在33个"极高风险"的国家，这些国家极易遭受气候变化影响。

These children face a deadly combination of exposure to multiple climate and environmental shocks with high vulnerability due to inadequate essential services, such as water, sanitation, healthcare and education, the report said.

这些儿童的生存面临着多种气候和环境突发事件的影响，并且由于水、环境卫生、医疗和教育等基本服务不足，他们在面对这些影响时十分脆弱。

Children living in the Central African Republic, Chad, Nigeria, Guinea and Guinea-Bissau are most at-risk, threatening their health, education and protection and exposing them to deadly diseases, it said.

中非共和国、乍得、尼日利亚、几内亚和几内亚比绍的儿童面临的气候变化风险最高，气候变化将威胁到儿童的健康、教育和受保护状况，并使他们更有可能患上致命的疾病。