Okavango
奥卡万戈（地名）
🗣️ 情景例句
How come you look so tired?
你怎么看起来这么疲倦？
We kept on discussing the problem for four hours.
我们持续讨论那个问题达四小时。
But this does not matter, for, as he has often remarked, one is never too old to learn.
但这没有关系，因为正如他常说的那样，人要活到老学到老。