时间是决定市场走势的最重要因素。

建筑应该挑战现状。

The spread of liberal democracy and the integration of the world economy have created a situation in which the only legitimate form of government is one that is based on popular sovereignty and respects basic human rights.

The greatest problem for mathematicians now is probably the Riemann Hypothesis.

我相信图像传达复杂情感的力量。