Knowing what he is capable of, you have every right to be afraid.
既然你知道他的能力如何,你的担心是完全可以理解的。
Apparently what happened was that water collected on these tar pits, and the bigger animals like the elephants ventured out on to the apparently firm surface to drink, and were promptly bogged in the tar.
沥青坑里积存了水,大象那样的大动物冒险到似乎坚固的水面上去饮水,立即掉进了沥青坑。