The two theories are mutually exclusive; you cannot accept both.

这两种理论是相互排斥的，你不能同时接受两者。

同一单元的其他句子

• The government implemented a new policy to alleviate the economic crisis.政府实施了一项新政策来缓解经济危机。
• Her profound knowledge of literature impressed the entire committee.她深厚的文学知识给整个委员会留下了深刻印象。
• Despite the adverse weather, the expedition continued its journey.尽管天气恶劣，探险队还是继续了旅程。
• Can you discern the subtle difference between these two paintings?你能辨别这两幅画之间的细微差别吗？
• The company's profits have been fluctuating due to market volatility.由于市场波动，公司的利润一直在波动。