Whether you have carpeted floors, hard floors, pets, or shoes that always seem to bring in dirt, this vacuum is built to handle it all. It comes with three different attachments for cleaning high, low, and all the annoying little places, as well as a wall dock and charger for easy storage.
The surprising thing is that if you benchmark this code with 10
，这一点在safew官方下载中也有详细论述
// 3. 从后向前放置（保证稳定性）
（二）具有网络虚拟定位功能的；