The phrase "a main partner in" is correct and usable in written English.
It can be used to describe a significant collaborator or ally in a particular project, initiative, or relationship.
Example: "The organization has established itself as a main partner in the community development project."
Alternatives: "a key partner in" or "a primary partner in".
In 2005, it launched its first commercial satellite on a Russian rocket in a project with Moscow, a main partner in transferring space technology to Iran.
We were worried that instability in France and Germany might cause the community to disintegrate; we were also concerned that if the community prospered and achieved the promised cohesion it would become something from which we would not want to be excluded, particularly as the United States would be inclined to regard it as a main partner in Europe.
Great news this month, with the announcement of Jaguar as a main partner in our World Land Speed Record attempt.
The civil society will be a main partner in the construction of this strategic document".
Contextual factors, sex with a main partner in particular, decrease condom use despite awareness of partner risk factors.
The civil society will be a main partner in the construction of this strategic document"., said Mr. Rosen Plevneliev, President of the Republic of Bulgaria.
Contextual factors associated with decreased odds of condom use were having sex with a main partner, homelessness in the past year, alcohol use during sex, and crack use in the past 30 days.
At baseline, 9.8% of men and 6.3% of women had a main partner also in the study.
National Commission on Child Rights The Commission is mandated to regulate and coordinate governmental and non-governmental efforts to implement the Convention on the Rights of the Child and is a main partner of UNICEF in bringing national legislation into compliance with the Convention.
Having a main partner who expressed interest in a pregnancy, injected drugs or whom one shared syringes with was negatively associated with consistent condom use at baseline.
He says that it's growing so fast right now that it might be the next IPO target, although given that it's also a main partner of Baidu, things could go in another direction.
