The multiverse is not a theory, it is a consequence of our best theories.
多元宇宙不是一个理论，它是我们最好理论的后果。
The security dilemma is a fundamental feature of international politics, as states' efforts to increase their own security often decrease the security of others.
能源的未来不是要在化石燃料和可再生能源之间做出选择，而是找到确保可靠性、可负担性和可持续性的正确平衡。
We all owe death a life.
