Quantity determination
[经] 数量确定
🧩 词语组成解析
🗣️ 情景例句
There are four of us including my parents, a younger sister and me.
有四口人，父母亲、妹妹和我。
Do you want to airmail it or not?
你想发航空信吗？
Don't let chances pass by.
不要让机遇从我们身边溜走。