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主要公路
auto.	main road; major road
bridg.constr.	main highway; primary highway; major highway
tech.	primary road; primary ways
主要干线公路
auto.	main highway; main-line highway; major highway; primary highway
主要〔干线〕公路
construct.	major highway

主要 公路: 3 phrases in 2 subjects

Management	1
Technology	2