Macker
炭质页岩
🗣️ 情景例句
You had better study hard.
你最好努力学习。
I'll go to a concert.
我要去听音乐会。
When you place a sheet of paper in a fax machine, the machine reads the writing on the page and changes the shapes of letters into electronic signals.
当你把一张纸放进传真机里，机器就会"读"纸上的字迹，把字的形状变为电子符号。