真正的礦業(yè)挑戰(zhàn)不在于開采資源，而在于可持續(xù)開采并為所有利益相關者創(chuàng)造價值。
Laughter is timeless,? imagination has no age, and dreams are forever.
"The world is a book, and those who do not travel read only one page."
發(fā)出履行性陳述并不是在做陳述，因此履行性陳述的發(fā)言既不真實也不虛假。