Governments have acted to protect nearly 各国政♥府♥保护了

500. A treaty signed by 49 states has
     一份49个国家签署的协议
501. Made it a treasure shared by all humanity.
     使其成为了全人类共同的财富
502. It's too late to be a pessimist.
     悲观为时已晚
503. Governments have acted to protect nearly
     各国政♥府♥保护了
504. Two percent of the world's territorial waters.
     世界上接近2%的水域
505. It's not much, but it's two times more than 10 years ago.
     虽然不多 但是10年前的两倍
506. The first natural parks were created just over a century ago.
     第一个自然公园创建于一个世纪前

来自《家园 第二部分 Home Part2》第 503 行