upgrade vt.提升，使升级
She was upgraded to (the post of) sales director. 她已提升为销售部主任。
hook up 连接
Hook up your computer to the Internet; wire your computer with the Internet
将你的电脑与交互网(互联网络)连接
set me back 花费
the works 最好的品质
【拓展词汇】
plug in 插上电源
speaker n.扬声器，扩音喇叭
remote control 远程控制
cable television n. 有线电视
