- unflagging alertness
- постоянная боевая готовность
Englsh-Russian aviation and space dictionary. - M.: Military publishing house USSR Ministry of Defence. edited by M. Murashkevich. 1974.
unflagging alertness
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Burton Dreben — Burton Spencer Dreben (1927, Boston 1999) was an American philosopher specializing in mathematical logic. A Harvard graduate who taught at his alma mater for most of his career, he published little but was highly influential as a teacher and as a … Wikipedia
