Letterless
a. 沒有信件的, 沒有刻印文字的
??? 情景例句
One is as old as one's heart.
心多老人多老。
It's time for class.
上課時(shí)間到了。
I don't understand! What do you mean? asked Mrs Brown.
“我不懂！你說的是什么意思？”布朗夫人問道。