Life has its ups and downs, but it certainly has its rewards.
人生有沉也有浮,但是无论怎样都确有其价值。
Why are you yelling?
你在嚷什么?
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.