Sentence examples for straightforward learning curve from inspiring English sources

Moreover, it is a highly operator-dependent method, requiring a not straightforward learning curve to reach an optimal diagnostic accuracy [1].

Moreover, CB-SCID1 might have a longer learning curve than more straightforward systems.

There's definitely a learning curve here, but after a relatively brief period of uncertainty I found it intuitive and straightforward.

There was no learning curve.

"There was a learning curve".

"It shortens the learning curve".

"There's no learning curve".

Their learning curve is different".

The learning curve was steep.

Is there a learning curve?

What about the learning curve?