As I said, mostly the building just needs a good cleaning.
就像我先前所说的 这栋建筑物大部份仅需要好好打扫一下
and realized that it was a sign that the child was growing up and developing valuable powers of observation and independent judgment,
并且意识到这象征着孩子们正在成熟和发展宝贵的观察力、独立判断力,