Sustainable development is not an option, but a necessity for the coal sector.
光波,无论是以太波还是其他波,在所有情况下都是时间上的周期性过程。
Some books are to be tasted, others to be swallowed, and some few to be chewed and digested.
最好的领导者不是创造追随者,而是创造更多的领导者。
Innovation is not from 1 to N, but from 0 to 1.
Farmers are the unsung heroes of our food system; their decisions shape the health of nations.