我们现在认为恐龙化石被发现时的姿势表明孵蛋的行为，也就是说，坐在蛋上直到蛋孵化。
Dinosaur fossils have been found in postures that we now believe to indicate brooding behavior, that is, sitting on the eggs until they hatch.
由于成年恐龙化石有时在巢穴附近或巢穴顶部被发现，我们一直在观察恐龙的育儿行为。
Since adult dinosaur fossils have sometimes been discovered near or on top of nests, we've been looking at the dinosaur parenting behavior.
换句话说，要对某种古代物种的行为得出明确的结论，只有一种类型的的化石是远远不够的。
In other words, having only one type of fossil is often not enough to draw definitive conclusions about an ancient species' behavior.
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