Demarkation
n. (=demarcation)定界, 分界
✅ 同义词
🗣️ 情景例句
This is Alexandra Pappas, and this is my grandson Robbie,
这是Alexandra Pappas ，这是我孙子Robbie
Why are you so mean? I've never done anything to you.
凶什么凶？ 我又没得罪你。
He is now satisfied merely to try to stand up, but as soon as he does so a porpoise knocks him flat.
此时的海龟，只要能站起来就满足了，但它刚站起来，就被一只海豚击倒。