It had a movable carriage, a lever for turning paper from line to line, and a keyboard on which the letters were arranged in alphabetical order.
它有一个可移动托架，有一个能把纸从一行转到另一行的杠杆，还有一个按字母顺序排列的键盘。
2
In a 2002 paper James Speta of Northwestern University laid out three broad historical justifications for applying common carriage to regulate prices and access.
So you can think of a new line as being rolling the paper up so you're on a new line but a carriage return moves the cursor or moves that writing head all the way back to the left.