Marching problem
[计] 步进式问题
🧩 词语组成解析
[计] 步进式的
🗣️ 情景例句
couldn't you?
不是吗？
Where were you yesterday afternoon?
你昨天下午在哪儿？
Look at this letter from Wang Wei to her penfriend in Australia.
请看这封王伟写给她在澳大利亚的笔友的信。