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be on edge
gen.	侧〔直〕立着; 竖着; 急躁; 紧张不安
on-edge
el.mach.	向边的

on edge : 99 phrases in 24 subjects

Architecture	4
Artificial intelligence	1
Astronomy	2
Automobiles	1
Aviation	1
Billiards	1
Bridge construction	1
Construction	3
Desert science	1
Electric machinery	3
Foreign trade	1
General	11
Librarianship	1
Metallurgy	14
Polygraphy	1
Power electronics	1
Public security	1
Scientific	2
Shooting sport	4
Slang	2
Space	1
Sports	3
Technology	37
Textile industry	2