to focus closely on something
se concentrer de manière approfondie sur quelque chose (se concentrer de manière approfondie sur quelque chose)
"Our analysis should zero in on customer pain points."
"Notre analyse devrait se concentrer sur les points sensibles des clients." (Notre analyse devrait se concentrer sur les points sensibles des clients.)
to be extremely frustrated and have no patience left
be careful what you say because someone might be listening
To stop doing something that is no longer profitable.
in a difficult or tricky situation
far more advanced than others
to be extremely happy