Problem reduction
[计] 问题归约, 问题简化
🧩 词语组成解析
🗣️ 情景例句
I'm so sorry.
很抱歉。
I'm too busy.
我太忙。
For the first time in his life, he became the proud owner of a bed which had springs and a mattress.
他平生第一次自豪地拥有了一张既有弹簧又带床垫的床。