He's such a workaholic that he doesn't know how to spend his leisure time.
他是个工作狂,以至于不懂得如何打发他的空闲时间。
You're always mixing me up with my twin sister!
你老是把我和我的孪生姐姐搞混!
The Native Americans caught and trained them and were then able to use them to carry their goods when they travelled from one camping ground to another.