So find those three things: rocks of the right age, that are sedimentary rocks, in a desert, and get yourself on the ground, and you literally walk until you see a bone sticking out of the rock.
所以，去寻找这三样东西吧： 特定年代的岩石， 沙漠的沉积岩， 然后让自己行走在地面上， 直到你看到岩石表面有显露出来的骨化石。