石油化工行业的未来在于可持续发展。

The best stories are those that reflect the complexity of life.

People of the same trade seldom meet together， even for merriment and diversion， but the conversation ends in a conspiracy against the public， or in some contrivance to raise prices.

时光飞逝，带着我们一同远去。我正在说话的这一刻已离我远去。