It means keeping up the pressure until the goal is achieved.
The phrase is used for emphasis and perhaps with a bit of sarcasm.
It suggests intentional negligence to avoid trouble, shirt responsibility.
It describes a situation where one party winning always no matter what.
It means sth. has far reaching influences, like a ripple that causes waves.
This expression means something shows a certain quality expressly.
"Straight and narrow" represents the strict but correct line of path.
If you wear your heart on your sleeve, you show your emotions.
To "leave it at that" is to abstain from further comment or action.