Without the decisions taken 20 years ago, atmospheric levels of ozone-depleting substances would have increased ten-fold by 2050. This could have led to up to 20 million additional cases of skin cancer and 130 million more cases of eye cataracts, not to speak of damage to human immune systems, wildlife, and agriculture.
试想如果没有20年前所做的决定，大气中的破坏臭氧层的物质含量将在2050年时达到1989年的十倍。这意味着额外增加2000万皮肤癌病例以及1.3亿白内障患者，更别提对人类免疫系统，野生动物和农业所造成的危害了。