Problem-based
问题导向; 基于问题
🧩 词语组成解析
v. 立基于, 以…为基础（base的过去式和过去分词）
🗣️ 情景例句
Good night.
晚安。
A liar is not believed when he speaks the truth.
骗子说真话，也没人相信。
Among the rubbish, I found a sign which said, 'Anyone who leaves litter in these woods will be prosecuted!'
“凡在此树林里丢弃垃圾者，将依法处置。