Ethernet is a shared medium, and the key to its success is its simplicity.

石油化工的未来在于高附加值、低碳产品。

The knowledge of the circumstances of which we must make use never exists in concentrated or integrated form, but solely as the dispersed bits of incomplete and frequently contradictory knowledge which all the separate individuals possess.

每个故事都是一次旅程，每次旅程都会改变旅行者。