Clythiidae
扁足蝇科
🗣️ 情景例句
After studying an hour, I finally got the hang of the lesson.
我学习了一个小时，终于理解了这一课的要点。
If I had had time,I would have called you.
如果我有时间，我就打电话给你了。
Our knowledge grows and the universe develops.
我们的认识在增长，宇宙也在发展。