He doesn't seem to be able to master the technique.

It takes only two or three tries to master the technique.

There is still another reason to master proper walking technique.

I've come a long way, but I have so far to go to master the technique.

He's had some chemical training, mostly stuff like gas analysis, but he might be able to master the necessary technique.

It took him eight months to master the technique, although he has injured himself on a few occasions.

He went away for a while to master the technique of the synthesizer.

They were, to keep alive, pursue knowledge, and master the technique of conspiracy.

By the time he's done a mile, Paul has mastered the technique completely, and feels like a king.

I may have also failed to master the technique.