I can't understand modern art, to me it look like rubbish.
我不能理解现代艺术,对于我来说,那些东西简直就是垃圾。
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,