Underprint
印在邮票图案下面的浅色底纹
🗣️ 情景例句
Will you please try to relax?
能不能放轻松些？
He who never was sick dics the first.
永不生病的人往往一病致命。
Oh, it's a short ruler. Who has a long one?
噢，这是把短尺。谁有长尺？