shuāng​céng

double-decker

双层 (雙層) shuāng​céng
double-decker adjective
having two decks, specifically referring to vehicles like buses or trains

London is famous for its red double-decker buses.

two-layered adjective
consisting of two layers, tiers, or levels

This is a two-layer cream cake.

Frequency

Movie subtitles
1.70 per million appears in 1% of films
Written text
5.90 per million

Sources

Definitions
CC-CEDICT