石油化工的未来在于可持续性和高效性。

解释：独来独往，独进独出，谁能阻碍他呢？

用户要的不是技术，用户要的是更好的体验。

I write to make sense of the world around me.

We hold these truths to be self-evident: that all men are created equal.

Every improvement in the circumstances of the society tends either directly or indirectly to raise the real rent of land, to increase the real wealth of the landlord, his power of purchasing the labour, or the produce of the labour of other people.