By combining 电 (electricity) and 线 (line), you get the very literal and easy-to-remember term “electricity line,” or electric wire.
While 电线 (diànxiàn) is a modern, technical term, its visibility in the urban landscape tells a story about China's development. In many older neighborhoods or rural areas, you might see dense, tangled webs of overhead 电线, sometimes jokingly called “spiderwebs” (蜘蛛网 - zhīzhūwǎng). This sight is a potent symbol of early, rapid, and sometimes chaotic infrastructure development. In contrast, modern Chinese megacities like Shanghai and Shenzhen prioritize aesthetics and safety by burying most 电线 underground. This visual difference—the messy overhead wires versus the clean, wire-free skylines—is often a stark indicator of a city's level of development and planning. While an American might see utility poles and overhead wires as a normal part of any suburban landscape, in China, their presence or absence is often a direct comment on the modernity of the location.
电线 (diànxiàn) is a high-frequency word used in many everyday contexts. Its connotation is almost always neutral and descriptive.