Combinatorial problem
[计] 组合问题
🧩 词语组成解析
[计] 组合的
🗣️ 情景例句
We haven't heard from him for weeks but we're still hoping for a letter.
我们已经有几个星期没有他的消息，但仍然盼望着他的来信。
Which American singer do you like to listen to?
你喜欢哪个美国歌星的歌曲？
Certainly!
当然可以。