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/ˌsʌb.weɪ̯ ˈsɝːfɨs/ · noun
(rail transport, US) 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..
Use subway-surface when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Subway-surface means (rail transport, US) 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..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use subway-surface where its definition matches the intended context.
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