The author has summed up the concrete experience in this respect and also point out some technical problems remained to be solved.

作者介绍了这一具体经验，同时也指出了存在的技术问题。

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The experiential learning model regards learning as a cyclic process that integrates concrete experience, reflective observation, abstract conceptualization and active experimentation.

这一基本模型认为学习是一个由具体经验、反思性观察、抽象概念化和主动尝试这四个环节组成的循环往复、不断积累的过程。

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But anyone who does immediately sees that there is very concrete and first-hand experience behind every single post that he writes.

但一旦看透他的语言，就会发现在每一篇博文背后都蕴藏着他实实在在的第一手经验。

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The training workshops will be led by a select group of experts, with the aim of providing a solid grounding in the tools, techniques, and methods used in the different fields of education assessment and measuring, allowing participants to optimize and enhance their knowledge, and providing them with a concrete learning experience.

UNESCO: All Events | United Nations Educational, Scientific and Cultural Organization

People with zero experience are walking into rental centers and coming home with concrete saws, fencepost augers and backhoes.

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The poured-concrete floors and dim lighting lend a hip, casual feel to the experience-on a recent evening visit, men (a mixed bag, including attorneys and artists) outnumbered women by about two to one.

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