延長線

Noun

 * 1) extension cord
 * 2)  extended line
 * 3)  power strip; power board
 * 4)  extension of a traffic route

Noun

 * 1)  extended line (usually as an auxiliary line)
 * 2) extension of a traffic route (e.g. highway or railway line)
 * 3)  extension or result developed from an existing thing