在观察性研究中,我们常常不得不依赖于无法直接检验的假设。
我本可以拥有另一种生活,但我正在过这种生活。
The future of food security lies beneath the waves, and we must harness it responsibly.
We are amusing ourselves to death.
信仰是所望之事的实底,是未见之事的确据。