交通立體化 jiāo tōng lì tǐ huà

DEFINITIONS

  1. grade separation

CHARACTERS

交 jiāo
HSK 4
mix; intersect; exchange, communicate; deliver
通 tōng
HSK 4
pass through, common, communicate
立 lì
HSK 5
stand; let stand; establish, set
體 tǐ body; group, class, body, unit
化 huà
HSK 3
change, convert, reform; -ize