Harry could tell that Riddle was doing some serious thinking.

哈利可以看出里德尔在进行很严肃的思考。

I've been doing some serious thinking about the baby. -Really? Why?

我认真想了很久，关于那宝宝。-真的？为什么？

Before moving to a new city or perhaps starting a new job, you need to do some serious thinking.

在搬去一个新城市或者也许在换一份新工作前，你需要深思熟虑。

They go through some very serious thinking about what can I do before they get to the really hard difficult ones, now I have to permanently remove an animal.

他们在做出艰难决定之前，如捕杀某种动物之前，要经过深思熟虑。

After spending three months in the hospital, I got the biggest shock of my life. The doctors told me that I showed absolutely no improvement. After some serious thinking, I figured that worry was preventing me from getting well.

在医院呆了三个月后，我受到了一生中最大的震撼。医生告诉我，我完全没有任何改善。经过一番认真的思考，我发现是担心阻碍了我的康复。