subway-surface
Definitions
Streetcar lines whose sections in the city center operate in tunnels like subway lines; typically built to speed up streetcar service by bypassing congested streets, as provision for future conversion to rapid transit, or both.
US
CEFR level
C2
Mastery
This word is part of the CEFR C2 vocabulary — mastery level.
This word is part of the CEFR C2 vocabulary — mastery level.
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