協力するって、言ってたよ。の英語

He said he'll help us.

Collaboration has apparently paid off for the two firms.

Collaboration has apparently paid off for both of them.

unwilling to cooperate

Cooperate with one another

mutual efforts

combined efforts

cooperation is a two-way street

They have investigated the possibility of cooperation.

to make concessions to each other

the proposition of cooperation

cooperate with each other

to cooperate with someone

cooperate

He spoke with emphasis on the necessity of cooperation.

cooperate or pretend to cooperate

bear a part in something

We plan for cooperation and collaboration with each other.

I cooperate with everyone and give one answer.

I did so at your request.

disagreement among those expected to cooperate

in combination with…

We had to cooperate with each other.

thoroughgoing cooperation

We need to cooperate with colleagues.

Cooperate with your friends in doing the work.

to respond to the influence of others

including by incorporating

to do something in cooperation with others

united efforts