I'll give him your message as soon as he's available.
他一有空我就转告他您的留言。
I prefer fishing to swimming.
比起游泳,我更喜欢钓鱼。
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.