The best games - whether serious or not - are excellent learning tools.
最好的游戏——不管是否严肃游戏——都是优秀的学习工具。
With the background behind us, let's find out whether this is a serious issue or not.
了解这些背景知识后,让我们来判断这是否是一个严重的问题。
I can't tell whether he's serious or not so I need your advice.
我就是不知道他是不是认真的,所以才需要你的意见。
I can't tell whether he's serious or not so I need your advice.
我就是不知道他是不是认真的,所以才需要你的意见。
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