On the basis of the analysis of the meanings of learning and learning behavior the article points out that learning behavior widely exists in human life and in the course of practice.

本文在分析学习及学习行为的涵义的基础上指出学习行为广泛存在于人的实际生活和实践过程中。

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One observes how extraordinarily vital relationship is in life, and how very few human beings have broken down the barrier that exists between themselves and another.

一个人应当观察到在生命中关系是多么的重要，以及能摧毁他自己和别人之间的壁垒的人是多么的少。

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Because of human life, education exists, and the basic content of education is the growth needs of life.

教育因为人的生命而存在，生命的生长需要才是教育的基本内涵。

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"The US government has no evidence that any life exists outside our planet, or that an extraterrestrial presence has contacted or engaged any member of the human race, " wrote space policy expert Phil Larson of the White House Office of Science and Technology Policy.

BBC: 'No evidence' for extraterrestrials, says White House