There are key turns to master for a really fast lap.

He could not master his own attention for a minute together.

He was mastering his own needs for those of others.

None of it's too difficult to master for an experienced driver.

Your son is struggling to master video design for his science class.

You should try to master something for the pure enjoyment of doing it.

What took her a month to master for herself, they could teach in a night, in an hour.

It mastered her for a moment, and then, held close as she was, began to wane.

It never occurred to her that the camera was too expensive and difficult to master for a child of her age.

To master a whole foreign language, for motivation and effective subsequent learning.