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держать под замком stresses
gen.	enlock; lock away; keep a tight lid on (artery); keep low key (в перен. смысле Irina Verbitskaya); contain (Побеdа); lock up; shut
Makarov.	cork up; shut in; shut up
obs.	hasp

держать под замком: 8 phrases in 2 subjects

General	6
Makarov	2