Combinatorial theorem
[计] 组合定理
🧩 词语组成解析
[计] 组合的
🗣️ 情景例句
Please call me Mary. That's my first name.
请叫我玛丽吧，那是我的名字。
Who is a social worker for the City of Los Angeles.
她是洛杉矶市政府的社会工作者。
One moring she was working at her desk in the library when a boy came in.
一天早上，她正在图书馆里伏案工作，这时，一个男孩走进来。