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(as) lively (или merry) as a grig Словари и энциклопедии на… – Newsexchanger

https://newsexchanger.wordpress.com/2020/03/16/as-lively-%d0%b8%d0%bb%d0%b8-merry-as-a-grig-%d1%81%d0%bb%d0%be%d0%b2%d0%b0%d1%80%d0%b8-%d0%b8-%d1%8d%d0%bd%d1%86%d0%b8%d0%ba%d0%bb%d0%be%d0%bf%d0%b5%d0%b4%d0%b8%d0%b8-%d0%bd%d0%b0/

(as) lively (или merry) as a grig 1…

source

https://search.academic2.ru/%28as%29+lively+%28%D0%B8%D0%BB%D0%B8+merry%29+as+a+grig

extremum ² – Newsexchanger

https://newsexchanger.wordpress.com/2020/03/16/extremum-%c2%b2/

экстремум в математике максимум или минимум функции см. тж. bend point, global minimum, maximum.

source

https://computers_en_ru.enacademic.com/20051/extremum