They finally decided their team name would be Army Ant.

Because Sheldon intended to threaten them that he was going to quit if he didn't get his way which is the team name didn't go for Army Ant.

Penny was wondering if Raj could answer the question since he was able to speak in front of women.?

But Leonard explained that it would be okay since the women are mixed into the crowd, he only has the problem when they are one-on-one and smell nice.

hold back: hesitate, if something holds you back, you hesitate doing it because you are not sure whether it is right thing to do.?

yield: if you yield to something, you stop resisting them