It does, however, have a significant learning curve.

然而，该入路有明显的学习曲线。

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James Comer says that no significant learning can occur without a significant relationship.

美国著名儿童精神科医师说过，没有强有力的联系，学习就不会有显著的进步。

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In terms of civic knowledge (questions 1 and 2), the authors found a significant difference in learning outcomes by country, which should probably be seen in the light of the widely different approaches to civic education in the countries.

UNESCO: Article on assesment

Providing feedback to students, explaining why their answers were right or wrong, and then allowing students to continue to work on a problem until they have it right and master the concept produces statistically significant gains in student learning.

FORBES: Building Motivation, Instilling Grit: The Necessity of Mastery-Based, Digital Learning

Secondly, as a recent book, has detailed, a significant number of undergraduates are learning little in college.

FORBES: Educated and Underemployed