School trips give children firsthand experience not available in the classroom.

学校组织的旅行可以给孩子们提供教室里学不到的亲身体验。

Take my firsthand experience and advice.

请接受我的切身体验和建议吧。

MORE: Firsthand Experience of "Don't Ask, Don't Tell".

更多：亲身体验“不问，不答”。

LICHTMAN: and I think most of us have had firsthand experience.

利希曼：我想，我们许多人都有亲身体会。

As contradictory as this sounds, I have firsthand experience of its truth.

这听起来似乎矛盾，不过我有亲身体验，证明它的真实。