The technician found a strand of copper wire loose inside the printer's power cable.

技術人員發現印表機電源線裡有一根銅線鬆脫了。

Please check each garment for loose strands of thread before packing it for shipment.

出貨包裝前，請檢查每件衣服是否有鬆脫的線頭。

The hotel guest complained that a strand of hair was left on the bathroom towel.

飯店房客抱怨浴室毛巾上留有一根頭髮。