Piot
abbr. 物质投入产出表（physical input-output table）
🗣️ 情景例句
I shall do as I please.
我喜欢怎么做就怎么做。
That's very nice of you, but I really can't.
谢谢你的好意，但是我实在不能再呆了。
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，