It means expanding the frontiers of knowledge, your own, and then the world.

它意味着拓展你自己知识的前沿，然后再扩充到全世界。

I was proud that Congress came together overwhelmingly to reaffirm our Nation's commitment to expanding the frontiers of knowledge.

我感到自豪的是国会团结一致 压倒性地重申了我们国家的承诺，扩大前沿知识面。

We have now seen what had previously been described as un-seeable, and pushed the frontiers of knowledge to the darkest regions of the universe.

我们现在已经看到了之前被描述为无法看到的东西，把前沿的知识推向宇宙中最黑暗的区域。

Pushing back the frontiers of knowledge that we would not have imagined we would be in.

推回我们无法想象的知识前沿。

The frontiers of knowledge, where it borders on the unknown, seems far away and irrelevant, separated from us by an apparently endless expanse of the known.

知识的边界，它与未知接壤，似乎遥远而无关紧要，与我们隔开了显然无穷无尽的已知。

The mark of a great education consists not only of the new frontiers of knowledge we reach, but of the existing viewpoints we reconsider; not necessarily of the understanding we gain, but of the assumptions we shed.

伟大的教育的标志不仅在于我们对于新知识的探索抵达到了多远，还在于我们对现有观点有多少重新的思考；这并不一定意味着要收获多少新的理解，而是我们放弃了多少假设。