Because I am that old.
Abstraction is indeed the key of any modularization, and without modularization every hope of being able to guarantee reliability and correctness vanishes.，更多细节参见电影
And to top it off, the vacuum is navigated by PreciSense LiDAR, meaning it doesn’t need your help to map multiple floors and avoid any clutter or furniture that may stand in its way.。关于这个话题，PDF资料提供了深入分析
——洪杰委员（三棵树涂料股份有限公司董事长兼总裁）