"We needed to gain the confidence of the financial system."

They needed to gain 4 seats in order to do that.

I need to gain access to the space under the floor.

"But we can tell them what they need to gain international legitimacy."

He still needed to gain weight to play professional baseball.

He needed to gain experience as a hot prospect for the future.

They needed to gain at least that much time before having to fight.

It would need to gain a speed of almost 5 miles per second.

We need to gain an insight into what companies are like now.

We do not need to gain any sort of small advantage.