Changefulness
不确定性
🗣️ 情景例句
OK, let's take a look.
好了， 让我们来看一看。
There isn't much room for doubt in this matter.
关于这件事，不大有质疑余地。
I don't know whether you realize it, but this condition is essential to us.
我不知道你是否了解，但是，这个条件对我们是必要的。