演示应用 — 你已在上方看到过它的截图。我创建了一个包含三个函数的演示：change_background_color（更改背景颜色）、change_app_title（更改标题）和show_alert（显示警告对话框）。
Soviet-era spacecraft 'likely' to have re-entered Earth's atmosphere
，更多细节参见91视频
The latest rush of docudramas seems to suggest that anyone in the public eye must expect a degree of intrusion. But where does that end?
今年前三季度销售开支到了 12.80 亿，比去年一整年花的还多……
The governor of California, Gavin Newsom, is widely regarded as one of the Democratic party’s leading contenders for the 2028 presidential election. He has also published a new book, Young Man in a Hurry, reflecting on his childhood and his path to the governor’s mansion.