Another describes a typewriter with a low-velocity typebar that eliminates noise.

还有一种打字机，它的低速联动杆除噪音。

A typewriter is also appealing in its transparency — whack a key, and watch the typebar smack a letter onto a piece of paper.

打字机以它透明的操博得人们的眼球——敲击键盘，目睹连动杆在一张纸上敲打出字母。