世界需要可靠的能源，而煤炭仍然在其中发挥着关键作用。
The world needs reliable energy, and coal still plays a critical role in providing it.
Those who cannot remember the past arecondemned to repeatit.
今天投资于幼体营养研究，明天将养活数百万人。
The world is a great clock, and we are the hands.