When wolves later reached the island, naturalists widely assumed that the wolves would play a key role in controlling the moose population.
博物学家们普遍认为,当狼群之后抵达该岛时,它们将在控制驼鹿数量方面发挥关键作用。
WHO reports annually on the proportion of the population using solid fuels for cooking as a key indicator for assessing progress in health and development.
世界卫生组织每年针对使用固体燃料进行烹饪的人口比例作出报告,以此作为评估卫生与发展方面取得进展的一项主要指标。
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