I don't know what's tighter, my jeans or my security.

The difference between a policy and a crusade is that a policy is judged by its results, while a crusade is judged by how good it makes its crusaders feel.

你必须花费一些精力和努力才能看到数学的美。

The big money is not in buying or selling, but in the waiting.

跨国合作是解决水产养殖全球挑战的关键。