The development of new vaccines has been a major breakthrough in medical science.

新疫苗的研发是医学科学的重大突破。

同一单元的其他句子

• The rapid urbanization of many countries has led to significant environmental challenges.许多国家的快速城市化带来了显著的环境挑战。
• Can you explain the concept of globalization and its impact on local cultures?你能解释全球化及其对当地文化的影响吗？
• Despite the economic growth, the gap between the rich and the poor continues to widen.尽管经济增长，贫富差距仍在扩大。
• The government should invest more in renewable energy sources to reduce carbon emissions.政府应该更多投资可再生能源以减少碳排放。
• What are the main causes of climate change according to recent scientific research?根据最近科学研究，气候变化的主要原因是什么？