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1·Her vision (视力) problems were so serious that she became blind in the end.

她的视力问题非常严重，最后还是失明了。

2·Many years ago, the problem was nor so serious because there were not so many people.

许多年前，由于没有那么多人，这个问题也没有那么严重。

3·Worst of all, my sore throat was so serious that I couldn't even swallow (吞咽)!

最糟糕的是，我喉咙痛得厉害，甚至无法进行吞咽！

4·The second attack was so serious that his airway swelled, preventing him from breathing, his blood pressure dropped suddenly, and his heart stopped for a moment.

第二次发作很严重，他的气道肿胀，无法呼吸，血压突然下降，心脏停了一会儿。

5·However, this is not so serious.

然而，这不是那么严重的。

6·Client: Yes, but not so serious.

顾客：是的，不过不严重。

7·Why are you so serious?

你为什么如此严肃？

8·But do not so serious, I am not agree with it.

但是不要太认真，我不这样认为。

9·Why so serious?

有什么好严肃的？

10·Ok. So serious.

好吧，挺认真的。