Without immediate action, many endangered species will become extinct within decades.

如果不立即采取行动，许多濒危物种将在几十年内灭绝。

同一单元的其他句子

• The government has implemented strict regulations to reduce carbon emissions.政府已经实施严格的法规来减少碳排放。
• Recycling paper and plastic can significantly decrease waste in landfills.回收纸张和塑料可以显著减少垃圾填埋场的废物。
• How can individuals contribute to environmental protection in their daily lives?个人如何在日常生活中为环境保护做出贡献？
• Do not dispose of hazardous waste into rivers or oceans.不要将危险废物排放到河流或海洋中。
• Renewable energy sources like solar and wind power are crucial for a sustainable future.像太阳能和风能这样的可再生能源对于可持续的未来至关重要。