Terms for subject Figure of speech containing thresholds

English	Russian
on the threshold of something	на волоске (Andrey Truhachev)
on the threshold of something	накануне (Andrey Truhachev)
on the threshold of something	на пороге (Andrey Truhachev)
on the threshold of	на пороге (something Andrey Truhachev)
on the threshold of	накануне (something Andrey Truhachev)
on the threshold of	на волоске (something Andrey Truhachev)