pulley
n
1 (apparatus consisting of a) wheel or wheels with grooves for ropes or chains, used for lifting things 滑轮(组); 滑车.
2 wheel or drum fixed on a shaft and turned by a belt, used esp to increase speed or power 皮带轮.
I'm afraid I can't agree with you. That's a good way of giving information, but it's not a good way of persuading people. For one thing, it's boring, and people aren't going to read an ad that looks boring. For another thing, one computer looks very like