collaborate closely

Translations
тесно сотрудничать
The departments need to collaborate closely to meet the deadline.
Отделы должны тесно сотрудничать, чтобы уложиться в срок.
Definitions
To work together in a very cooperative and coordinated manner, often involving frequent communication and joint efforts to achieve a common goal.
Words
collaborate

verb
сотрудничать
closely

adverb
тесно