Keep buttons, string, sewing needles, pins and other sharp objects out of your puppy's reach.
将纽扣,线,缝纫针,别针和其他锋利物体放在狗狗够不到的地方。
In a real application, you might not add such buttons if you want to keep the user interface simple and do both saving and restoring transparently and automatically.
在真实的应用程序中,如果希望保持用户界面简洁并能够透明、自动地保存和恢复表单,则不需要添加这些按钮。
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