yán​cháng​xiàn

extended line

延长线 延長線 yán​cháng​xiàn
extended line noun
The extension of a physical line, such as a segment of a transportation route or a mathematical line segment.

This extension cord is too short.

extension cord
An electrical cable used to extend the distance between a plug and a socket, often including multiple outlets; also called a power strip.

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Classifier

Same as