Sitzmarks
是一种胃肠道造影剂（不透射线的小环）
🗣️ 情景例句
Don't eat too much candy, you'll spoil your appetite.
别吃太多的糖果，否则你会吃不下饭的。
Would he have seen you if you hadn't waved to him?
如果你没向他招手他会看见你吗？
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，