Marching problem
[计] 步进式问题
🧩 词语组成解析
[计] 步进式的
🗣️ 情景例句
The Molinas are a large family.
Molina家是一个大家庭。
It's up to us to help those in need.
我们有责任帮助那些有困难的人。
Tie a heavy weight at the end of a long piece of string.
把一个重物拴在一根长绳子的一端，