每měi ‘every’, like a demonstrative, is normally followed by a measure. It is also regularly linked with the adverb 都dōu:
Zhè ér de měi gè hái zǐ dōu hěn huó pō。
All the children here are very lively.
Nǐ de měi běn shū dōu hěn yǒu qù。
All your books are interesting. /Every one of your books is interesting.
Tā měi tiān dōu dào hé biān qù diào yú。
He goes to the river every day to do some fishing.
Like a demonstrative, it is also often followed by a numeral + measure phrase. In these cases it is not necessarily linked with 都dōu, and there is generally another numeral + measure phrase in the predicate:
Wǒ men měi liǎng gè yuè qù yī cì。
We go/went there every two months.
Měi sān gè xiǎo shí chī liǎng lì。
Take two pills every three hours.
 Yip, P. C., Rimmington, D., Xiaoming, Z., & Henson, R. (2009). Basic Chinese: a grammar and workbook. Taylor & Francis.