单线

單線

dānxiàn

noun #23,967

Meanings

1 single line
2 single track (railway)
3 one-way channel of communication

Characters

single / one / alone

line / thread / wire

Examples

这段铁路是单线，两车不能同时通行。

Zhè duàn tiělù shì dānxiàn, liǎng chē bùnéng tóngshí tōngxíng.

This stretch of railway is single-track; two trains cannot pass simultaneously.

情报人员通过单线联系，保证安全。

Qíngbào rényuán tōngguò dānxiàn liánxì, bǎozhèng ānquán.

Intelligence operatives use single-channel contacts for security.

Tips

usage

In espionage contexts, 单线联系 (single-line contact) means an agent only communicates with one handler and knows no other network members, limiting exposure if caught.

Stroke Order

单 dān

线 xiàn