How to Measure the Time Between Animations

I prepared an animation scene and going to record my voice on it. To this, I need the measure the time that during between animations. I try the time module but it doesn't measure the time between animations but, guess, python's reading time. What should I do? Here is the code and console's print:

```
class KaraTahta(Scene):
def construct(self):
a = Circle()
start_time = time.time()
self.play(ShowCreation(a), run_time=2)
self.wait(3)
elapsed_time = time.time() - start_time
print(elapsed_time)
```

查看 manim 中的 Scene 類別及其動畫方法。使用者希望測量動畫的即時持續時間，而非 Python 的執行時間。檢查 run_time 的處理方式，以及是否有辦法從動畫回放中取得時間戳。程式碼範例顯示一個簡單的 Circle 動畫；先從理解 play 和 wait 方法開始，看看它們是否暴露時間資訊。

由索引模型根據 Issue 內容生成。