ADJ [ADJ n]第一手的;直接的;亲身的First hand information or experience is gained or learned directly, rather than from other people or from books. →see: first第一手的;直接的;亲身的
School trips give children firsthand experience not available in the classroom.
学校组织的出游能让孩子们获得在课堂上得不到的亲身体验。
First-hand is also an adverb.
We've been through Germany and seen first-hand what's happening there.