Hmf
abbr. hollow metal frame 空心金属架
🗣️ 情景例句
... Oh, oh, I see.... Oh ... certainly.
……嗯 嗯 我知道了。……嗯……一定。
That is not good language which all understand not.
不是人人都懂的语言不是好语言。
This is a kind of printing that blind people can read by touching groups of raised points that are printed on paper.
布莱叶盲文是一种印刷字体，盲人通过摸印在纸上起的点点来读书。