这是三家美国零售商：CIRCUIT CITY：电路城 （金融危机时已经倒闭）
RADIO SHACK：无线电用品商店STAPLES：斯特普尔斯
circuit
环行常见释义
英[?s??k?t]
美[?s??rk?t]
n.
环行;环行路线;电路;线路;巡回赛;赛车道;巡回;（法官的）巡回审判;
vt.
巡回;周游;
例句
When circuit weld hole is welded on center sills, CIR command adopted traditionally to weld circle arc is changed due to narrow welding space. ARC command has substituted for CIR command, resolving undercut welding defects existing on circuit weld seam.
circuitry
电路常见释义
英[?s??k?tri]
美[?s??rk?tri]
n.
电路系统;电路;电路装置;
例句
The computer's entire circuitry was on a single board.
circuitry是circuit的名词形式